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Your ecological impact across all dimensions, updated in real-time from your garden data.
Every front yard is invisible flood infrastructure. Rain gardens with native plants reduce stormwater runoff by up to 90%. While conventional lawns saturate and shed water into overwhelmed storm drains, native root systems — reaching 6 to 15 feet deep — create living channels that pull thousands of gallons underground each year. In Houston, where flooding is not hypothetical but seasonal reality, your garden is quietly performing hydrological engineering that no concrete culvert can replicate.
This is the organized complexity Jane Jacobs described — not one massive dam, but ten thousand pocket prairies, each absorbing, filtering, and releasing water on its own schedule. When your neighbors do the same, the lattice holds.
Based on native infiltration rate (9.0 in/hr) vs conventional turf (0.5 in/hr) and your zone rainfall data.
Cities are ovens. Your garden is a cooling station. The urban heat island effect raises city temperatures 5-10°F above surrounding rural areas, turning concrete and conventional lawns into radiant surfaces. A 10% increase in tree cover alone can reduce ambient temperatures by up to 7°F. Native plants cool through evapotranspiration — leaves literally converting heat energy into water vapor, changing the physics of how your block absorbs and releases the sun.
For elders sitting on front porches, for children playing after school, for neighbors walking the sidewalk — the difference between a mowed lawn radiating heat and a native prairie releasing cool moisture is the difference between endurance and livability. This is not decoration. This is thermal justice.
A single mature tree can cool surrounding air by up to 10°F. Native prairie reduces surface temp by 2-5°F per 1,000 sqft.
Soil is a carbon vault. Your garden is the key. Restoration of grassland biodiversity increases annual carbon storage by 200% compared to monocultures. Prolonged industrial lawn management has released billions of tons of carbon into the atmosphere through mowing, blowing, fertilizing, and destroying the soil life that holds carbon underground. Native plant diversity reverses this — diverse root systems feed diverse microbial communities that stabilize carbon below ground for decades.
And then there is the carbon you simply stop producing. A single 30-minute leaf blower session emits nearly a kilogram of CO₂, plus hydrocarbons and carbon monoxide. Multiply that by the 40 million acres of industrial lawn in the U.S. maintained by the "Mow, Blow, Go" industry, and you begin to see: the conventional front yard is not neutral. It is actively contributing to the crisis. Every steward walk — every time you choose presence over machinery — is an act of atmospheric restoration.
Perennial grasslands store 10x more soil carbon than annual monocultures. Sources: Nature Communications, Frontiers in Plant Science.
Silence is an ecosystem service. Commercial landscape equipment blasts at 100+ decibels — louder than a rock concert — disrupting a quarter-mile radius every time it runs. This is not just human annoyance. Birds abandon territories near chronic noise. Pollinators alter foraging patterns. Children lose what Alexandra Lange calls the "aural niche" — the acoustic space to hear, think, and play.
Native vegetation buffers sound through multiple mechanisms — leaves absorb, trunks scatter, twig complexity deflects. Beyond physics, visible green creates psychological buffering: the mind hears less in the presence of vegetation. When you opt out of industrial lawn care, you restore not just ecological peace but the conditions for sidewalk conversation, for birdsong, for a child's concentration. You create what a neighborhood actually sounds like when it is alive.
Dense native plantings achieve 3-10 dB reduction. Each garden opting out of mow-and-blow benefits 50-200 households.
Conventional landscaping created a green desert. The 40 million acres of industrial lawn in America are biologically sterile despite their verdancy — supporting fewer species than bare pavement. Native plant landscapes support 4x more biodiversity for pollinators and invertebrates. A native oak supports 500+ caterpillar species; a non-native ornamental supports 5. A single family of chickadees needs 6,000 to 9,000 insects to raise one clutch of young.
This is the ecological sidewalk ballet — the seasonal, unchoreographed movement of pollinators, birds, and soil organisms through the micro-sanctuaries that your garden creates. When over 22% of native North American pollinators face elevated extinction risk and 70% of our native grasslands have been eliminated, each pocket prairie is not a luxury. It is an ark. Your species list is not just data — it is the passenger manifest.
Birds require 70%+ native plant coverage to sustain populations. Sources: Audubon, NatureServe, PNAS.
The conventional lawn is the most expensive way to own nothing. Conventional lawn care costs $1,950-$3,900 per 1,000 sqft/year — fertilizers, pesticides, weekly mowing, irrigation. You pay to maintain a monoculture that produces no food, supports no wildlife, absorbs no flood water, and provides no shade. Native stewardship costs $250-$550 and produces ecological wealth that compounds every year.
Beyond household savings, community gardens measurably increase property values within 1,000 feet, with the greatest impact in the neighborhoods most affected by disinvestment. Your garden is performing municipal services — stormwater management, air filtration, carbon sequestration, mental health support — that cities spend billions trying to provide through infrastructure. The Living Lattice is civic infrastructure grown from the ground up.
Home gardeners save an average $92/month. Sources: University of California, Springer.
The front yard is where the private organism meets the public organism of the city. Jane Jacobs understood that sidewalks are not transit corridors — they are the social organ where trust is built, where the "eyes on the street" emerge from daily, casual, unremarkable contact between neighbors. A pocket prairie in a front yard does something a backyard garden never can: it performs its beauty publicly. It invites conversation. It signals that someone here cares.
Research confirms what neighbors already know: activated green spaces generate 7x more social interactions than conventional lawns. Thirty minutes weekly in green space reduces depressive symptoms — if the global population met this threshold, depression prevalence could drop 7%. But access is profoundly inequitable. The neighborhoods most stressed have the least green. When you transform a front yard, you do not just garden. You create what Jacobs called the conditions for "self-governance" — the informal, daily, visible proof that a community is taking care of itself and each other.
Tree canopy in lower-income neighborhoods delivers disproportionate mental health benefits. Sources: University of Washington, Frontiers in Public Health.
Where your plants come from matters as much as what they are. A native species grown from local seed stock carries millennia of adaptation to your specific soil, rainfall, and temperatures. Mass-produced "native" plants from distant nurseries may carry the right name but the wrong genetics — like speaking the right language with the wrong dialect. Local provenance means your garden speaks fluently to the insects, birds, and soil organisms that evolved alongside these exact genetic lineages.
When you share cuttings, trade seeds, and swap starts through the Community Nursery, you are not just exchanging plants. You are distributing locally-adapted genetic resilience across the lattice. This is conservation as "conservare" — keeping it together — not preservation as freezing. The genetics flow, adapt, and strengthen. Progress over perfection.
Texas Blackland Prairie optimal native palette includes ~120 species. Each garden contributes toward that genetic diversity target.
Your gardens' food production potential, culinary diversity, and nutritional output.
Add food plants to see your personalized planting calendar.
Add food plants to discover companion planting guilds.
Add food plants to see preservation methods.
Your garden is a kitchen that grows itself. The food intelligence system tracks over 50 species with 22 data dimensions each — from Scoville heat ratings to nitrogen fixation potential. Every food plant you add unlocks culinary profiles, preservation methods, companion planting strategies, and Houston-specific planting calendars. The goal is not just food production — it is food sovereignty, nutritional resilience, and the deep satisfaction of eating what your own soil, rain, and care have produced.
Sources: USDA FoodData Central, Texas A&M AgriLife Extension, Harris County Master Gardeners, National Center for Home Food Preservation.
Comprehensive allergen screening across all species — pollen, contact, toxicity, pet safety, and food allergens.
Add food plants to see allergen analysis.
Add food plants to see cross-reactivity warnings.
Know what grows in your garden — for everyone's safety. Allergen intelligence screens ALL garden species — native and non-native — across pollen/respiratory, contact dermatitis, ingestion toxicity, pet toxicity, and food allergen categories. This is especially important for community gardens, school gardens, and households with children, pets, or immunocompromised members. The system does not replace medical advice — it provides awareness so you can make informed decisions about what to grow and how to share it.
Sources: ASPCA Poison Control, NIH/PMC, OGLE Allergy Scale, USDA Plant Database, WHO/IUIS Allergen Nomenclature.
Comprehensive ecological health across all your Micro-Santuarios.
Network-wide ecological restoration progress and the 3% tipping point.
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Track your ecological competencies, service hours, and progress toward mastery.
Six ecological knowledge domains with four mastery levels each. Track your learning journey.
Log mentoring, teaching, community planting, and other service to the conservation network.
Your way emerges from your practice. It reflects how you walk the path, not where you stand on it.
Programs your garden may qualify for.
All your recorded activities across gardens. These feed your Way of Stewardship and Growth Pathway.
Connect gardens into ecological restoration corridors and neighborhood networks.
There is a tension at the heart of this work, and we hold it deliberately. Measuring nature through metrics, analytics, and technology risks reducing the very living complexity we seek to protect. A garden is not a dataset. A bird does not care about your pollinator score. The smell of rain on warm soil cannot be quantified.
Yet without measurement, we cannot coordinate collective action, demonstrate the impact of a thousand front yards being transformed, or invite participation at scale. We need both the wisdom of the hands in the soil and the clarity of ecological data.
This is not a problem to solve. It is a tension to hold. The garden system is designed to make space for both.
We don't use "levels" because stewardship is not a ladder. There is no ascent from worse to better. Instead, we recognize five ways of walking the same path. Each represents a distinct relationship with your garden — a rhythm that defines how you are present with your land.
Your way is not chosen — it emerges from your practice. The system observes what you actually do and reflects it back. Your way may shift over time, and that is exactly how it should be. All tools and modules are always available to everyone, regardless of way.
When you register a garden and add species, the system automatically calculates a set of ecological indicators. These are not grades or scores — they are mirrors that reflect the current state of your garden's ecological relationships.
Your garden's native ratio, bloom calendar, vegetation layers, and host plant count — all derived automatically from your species list. Enter your plants once, and these metrics update everywhere.
The Dashboard aggregates your garden's ecological vitality across five dimensions: biodiversity, water resilience, soil health, pollinator refuge, and canopy coverage. These scores come from the assessment modules you complete.
Track your development across six ecological knowledge domains, log service hours, explore certification programs your garden may qualify for, and see how your stewardship connects to the broader corridor network.
Twenty-seven specialized tools organized into habitat assessment, pollinator analysis, soil vitality, hydric and thermal stewardship, bio-audits, and more. Each module auto-populates what it can from your garden's existing data, so you only enter information once.
When you add food-producing plants to your garden, the system activates a dedicated Food & Kitchen Intelligence tab on your garden card. This includes culinary profiles for over 50 species with edible parts, flavor profiles, and Houston-specific planting calendars. Track harvest yields, explore preservation methods (canning, freezing, fermenting, dehydrating), discover companion planting guilds, and see which of your plants contribute to food security, caloric output, and nutritional diversity. The system draws from an integrated database covering Scoville heat ratings, dynamic accumulators, nitrogen fixers, and trap crop systems.
The Allergen Intelligence tab cross-references your garden species against nine allergen groups: nightshade, pollen-food syndrome, latex-fruit cross-reactivity, allium, oxalate, gluten-related grains, tree nut, soy, and dairy-adjacent plants. Set your personal allergen profile with severity levels, and the system highlights which plants in your garden may trigger sensitivities. This is especially valuable for community and educational gardens where visitors may have unknown allergies.
We believe every number shown on your dashboard should be traceable, explainable, and open to challenge. That is why we publish our complete Metrics & Calculations Transparency Report — a public document disclosing every formula, data source, assumption, and limitation behind the impact metrics you see here.
This includes the nine-dimension impact engine (water, heat, carbon, noise, biodiversity, economic, social, provenance, ecological), the trust and verification scoring system, all eleven ecological assessment modules, the Ecological Vitality Index composite, and the zone-specific baselines calibrated for Texas regions. Every constant traces to a published source: EPA, USDA Forest Service, NOAA, i-Tree, Xerces Society, and peer-reviewed ecological research.
We welcome your feedback. If you identify an error, a better data source, or an improved methodology, please email info@holonfoundation.org with subject line [Metrics Feedback], or use our contact form on the website. All substantive feedback is reviewed by our Governance Committee and contributors are acknowledged in revision notes.
If just 3% of Houston's front yards are activated with native habitat, it generates 1,377 acres of conservation land — larger than Central Park and Hermann Park combined. This does not require one Robert Moses. It requires 10,000 grandmothers, fathers, and children. It requires you.
The front yard is the semi-public interface where private life meets the public organism of the city. It is not a decorative afterthought. It is civic infrastructure — ecological, social, economic, cultural, and political — and the reasons to transform it are as profound as they are diverse. What follows is not a wish list. It is what the research shows.
North America has lost nearly 3 billion birds — 30% of the total population — since 1970. Grassland species have declined 53%. The Audubon Society's research shows that only yards with 70% or more native plants sustain stable bird populations. A pair of chickadees needs 7,000 to 9,000 caterpillars to raise a single clutch. A native oak supports 557 caterpillar species; a non-native ornamental supports 5. The math is unforgiving: without native plants, there are no insects; without insects, there are no birds.
The National Wildlife Federation has certified over 300,000 wildlife habitats. Houston Audubon's Bird-Friendly Spaces program is building corridors through neighborhoods. The National Audubon's Plants for Birds initiative aims to plant one million native plants. Your front yard is a node in this network — a waystation on a flyway that crosses continents. When your pocket prairie connects to your neighbor's, the corridor holds.
Sources: Cornell Lab of Ornithology, National Audubon Society, NWF, Houston Audubon
Flying insect biomass has declined 76-82% in 27 years. One in four native bee species faces extinction risk. The American bumblebee has lost 90% of its population; the Rusty Patched Bumblebee has lost 95% of its range. Pollinators underpin $3 billion in annual economic value and are essential for two-thirds of crop species. Monarch Watch has registered over 45,000 waystation habitats in response to the monarch losing 6,000 acres of habitat per day.
The Xerces Society, Pollinator Partnership (32 ecoregional guides), and the Lady Bird Johnson Wildflower Center (25,000+ species in their database) all point to the same conclusion: native plant diversity is the foundation of pollinator survival. Native gardens support 4x more invertebrate biodiversity than lawns. This is the ecological sidewalk ballet — seasonal, unchoreographed, ancient, and alive. Your species list is not just data. It is the passenger manifest of an ark.
Sources: Xerces Society, Pollinator Partnership, Monarch Watch, PNAS, NatureServe
Areas with the fewest green spaces show 33% higher rates of physician-diagnosed depression. Living more than a kilometer from green space increases stress odds by 50%. Meta-analyses confirm that green space reduces depression risk by 11% and anxiety by 6%. Walking through green reduces cortisol by 53% — compared to 37% for an urban walk. Patients recovering from surgery with window views of trees leave the hospital nearly a full day earlier, take fewer pain medications, and receive fewer negative nurse notes.
Greenspace is not a luxury. It is mental health infrastructure that operates at physiological and psychological levels simultaneously. Cortisol drops. Focus restores. Attention Restoration Theory explains what gardeners already know: the mind, in the presence of living complexity, remembers what it is to be part of something rather than apart from it. When you steward a front yard, you create this for yourself and for every person who walks past it.
Sources: Lancet Planetary Health, Science (Ulrich, 1984), Frontiers in Public Health
The landmark Philadelphia randomized controlled trial found that greening vacant lots reduced gun violence by 29%, burglaries by 22%, and nuisance complaints by 30%. Buildings with high vegetation show 48% fewer property crimes. A 10% increase in tree canopy correlates with a 10-11% decrease in assault, battery, robbery, and narcotics rates. Community-engaged greening — where residents participate in the transformation — achieves approximately 40% reduction in violent crime.
Jane Jacobs called it "eyes on the street" — the natural surveillance that emerges when people are present, engaged, and visible in their neighborhood. A front yard garden does not just beautify. It creates the conditions for presence. It brings people outside. It signals care. Seventy-six percent of residents near greened lots reported significantly increased outdoor use. The garden is not a security system. It is something deeper — a visible commitment to the place that makes invisible threats retreat.
Sources: Branas et al. (Columbia/UPenn), PNAS, Landscape and Urban Planning
Cities with top-ranked park systems show 26% more social connections between low- and high-income residents and 60% higher volunteer rates. Block parties in shared green spaces increase voter turnout by 3 percentage points. Higher vegetation reduces loneliness, which in turn reduces distrust and social indifference. Communities with high mutual trust and reciprocity show measurably lower homicide rates. Parks serve as what researchers call "neutral ground" — places where people of different backgrounds encounter each other on equal terms.
In a time when political polarization has made neighbors strangers, the front yard is one of the last spaces where proximity creates contact. A pocket prairie is a stigmergic signal — it says "this is safe, this is good, you can do this too." It is not a political statement. It is a relational one. Intergroup contact theory confirms what sidewalks have always known: unstructured encounters in shared spaces reduce prejudice and build positive relations. The garden does not argue. It invites.
Sources: Trust for Public Land, Nature Scientific Reports, Stanford Social Innovation Review
Children are indicator species for the health of a city. Increased residential green space within 50 meters reduces hyperactivity problems by 38%. Green exposure enhances working memory, reduces inattentiveness, and triggers beneficial structural brain changes in early childhood. A 20-minute park walk is comparable to stimulant medication for improving concentration in children with ADHD. Nature play — freely chosen, child-led interaction with natural elements — improves cooperation, self-regulation, spatial memory, and sleep.
Alexandra Lange writes about how urban design shapes independent children. The front yard is where this begins. Screen time's negative effects on daily living skills are reduced by 20% — but only in neighborhoods with accessible greenspace. When children can move freely through a landscape that is alive, they become citizen scientists, trading soil and seeds instead of apps. The new lemonade stand is a pocket prairie. The Holon Backpack equips them to be "eyes on the street" for neighborhood ecology. If a child can play safely and observe freely, the city is healthy.
Sources: PNAS, Frontiers in Psychology, Alexandra Lange, Holon Labs
Rain gardens without underdrains achieve 89% stormwater volume reduction. Native prairie root systems reach 6 to 15 feet deep, creating living channels that infiltrate water at rates 18x higher than conventional turf. The EPA documents rain gardens diverting 900,000 gallons annually from sewer systems. Green infrastructure saves cities 30-60% compared to conventional drainage projects. Annual U.S. flood damages are projected to increase by $750 million, with 100-year floodplains expanding 45% by 2100.
In Houston, flooding is not hypothetical. It is seasonal reality. Your garden is performing hydrological engineering that no concrete culvert can replicate. This is the organized complexity Jane Jacobs described — not one massive dam, but ten thousand pocket prairies, each absorbing, filtering, and releasing water on its own schedule. When your neighbors do the same, the lattice holds.
Sources: EPA, Headwaters Economics, Journal of Environmental Management
Forty percent tree canopy delivers a 7-9°F cooling effect. The right tree in the right place reduces summer air conditioning costs by 50%. Tree-shaded homes use 15-30% less air conditioning. But in 92% of U.S. communities, low-income blocks have measurably less tree cover — 15% less on average and 1.5°C hotter in summer. Low-canopy neighborhoods can be up to 15°F hotter than greener areas, with significantly higher rates of heat-related illness and mortality.
Research shows that urban tree canopy has a greater cooling effect in socially vulnerable neighborhoods. For elders on front porches, for children playing after school, for workers walking home — the difference between a mowed lawn radiating heat and a native prairie releasing cool moisture is the difference between endurance and livability. The bipartisan TREES Act now prioritizes low-income communities for canopy expansion. This is not decoration. This is thermal justice.
Sources: EPA, Nature Communications, American Forests, Cell Reports Sustainability
Conventional lawn care costs $1,950-$3,900 per 1,000 sqft/year. Native stewardship costs 73% less and requires 24x fewer maintenance hours. Over a decade, native landscapes save $3,950-$4,683 per acre annually. Homes within 500 feet of community gardens gain an average $13,000 in property value. Homes near parks see 8-20% higher valuations, with the greatest impact in neighborhoods most affected by disinvestment.
But the economic story goes deeper than household savings. Your garden performs municipal services that cities spend billions providing through infrastructure: stormwater management, air filtration, carbon sequestration, heat mitigation, mental health support. Green infrastructure saves cities 30-60% compared to conventional projects. The Living Lattice is civic infrastructure grown from the ground up — funded not by bonds but by the relational stewardship of people who chose presence over machinery.
Sources: University of California, Ernst Seeds, EPA, Springer
One in six Americans — 53.6 million people — lives in a food desert. One in five Black households lives in a food desert. Only 1 in 10 adults eats the recommended amount of fruits and vegetables. Community gardens directly address this: 38% of gardeners harvest 1-5 pounds of food weekly, and 26% harvest 6-10 pounds. Urban and peri-urban gardening already produces 15-20% of the world's food supply.
Food sovereignty is not just about calories. It is about agency — the ability to grow, share, and choose what nourishes your family. A front yard edible-native garden is simultaneously a food source and a pollinator refuge. Native fruiting plants feed both birds and people. The Community Nursery's peer-to-peer exchange network distributes not just plants but locally-adapted genetic resilience and intergenerational knowledge. This is conservation as "conservare" — keeping it together.
Sources: USDA, CDC, Feeding America, Sustainability Science
Soil is the largest terrestrial carbon reservoir on Earth — storing more carbon than the atmosphere and all plant life combined. Mycorrhizal fungi networks act as "deep carbon engineers," generating extensive underground networks that create and stabilize soil aggregates. Mixed native plantings using plant-mycorrhiza synergy achieve 40% higher soil carbon storage than monoculture plantations while simultaneously recovering local biodiversity.
Industrial lawn care has spent decades destroying this underground infrastructure through compaction, chemical treatments, and monoculture. When you plant diverse native species, their roots feed diverse microbial communities that stabilize carbon underground for decades. The Houston Botanic Garden's Land Care Institute teaches soil ecology and organic standards. NOFA's Organic Land Care standards provide the framework. Your garden is restoring what lies beneath — the invisible, ancient network that holds everything above it together.
Sources: PNAS, Cell Trends in Ecology & Evolution, Nature Communications
Urban tree canopy removes 4.7 to 64.5 tons of fine particulate matter (PM2.5) annually per city, generating $1.1-$60.1 million in health cost improvements from avoided mortality and respiratory illness. PM2.5 penetrates deep into lungs and enters the bloodstream, causing cardiovascular disease, respiratory illness, and premature death. Broadleaved native species with complex leaf surfaces are most effective at capturing these particles.
Meanwhile, the 40 million acres of industrial lawn actively produce emissions: a single 30-minute leaf blower session emits nearly a kilogram of CO₂ plus hydrocarbons and carbon monoxide. Restoration of grassland biodiversity increases annual carbon storage by 200%. Perennial native systems store 10x more soil carbon than annual monocultures. Every time you choose presence over machinery, you perform atmospheric restoration — from both sides of the equation.
Sources: USDA Forest Service, National Park Service, Nature Communications, Frontiers in Plant Science
Dense native plantings 15-30 meters wide reduce sound by 6-8 decibels. Mixed broadleaf plantings can achieve up to 10 dB reduction. Commercial landscape equipment blasts at 100+ decibels — louder than a rock concert — disrupting a quarter-mile radius every time it runs. Noise pollution disrupts sleep, increases cardiovascular risk, elevates chronic stress, and fragments wildlife habitat.
Beyond physics, visible green creates psychological buffering: the mind perceives less noise in the presence of vegetation. Alexandra Lange describes the "aural niche" that children need — the acoustic space to hear, think, and play. Birds abandon territories near chronic noise. Pollinators alter foraging patterns. When you opt out of industrial lawn care, you restore not just ecological peace but the conditions for sidewalk conversation, for birdsong, for a child's concentration. Silence is an ecosystem service.
Sources: Inter-Noise, Springer Acoustics, Alexandra Lange
Eighty percent of the world's population lives under skyglow, and global light pollution is increasing 10% every year. DarkSky International documents cascading harm: light pollution reduces nocturnal pollinator visits to flowers by 62%, causes an estimated 100 billion insect deaths annually, reduces caterpillar populations by up to 52% in lit areas, and kills millions of migrating birds who collide with illuminated structures. Seventy percent of moths — crucial nighttime pollinators — fly toward streetlamps instead of flowers.
For humans, artificial light disrupts melatonin production, circadian rhythms, sleep quality, and increases cardiovascular risk. Native plant gardens designed with DarkSky principles — fully shielded, downward-directed lighting — create microhabitats where nocturnal foragers can feed safely. The lattice is not just a daytime system. Half of insect species are nocturnal. The garden that serves them at night serves everyone.
Sources: DarkSky International, Science Advances, USFWS, Biological Conservation
Native plants are tangible links to ancestral knowledge — symbols of continuity, cultural distinctiveness, and place. Indigenous communities have used native species for food, shelter, medicine, ceremony, and clothing since time immemorial. Immigrant communities recreate homeland flavors and memories through plants, joining native plant knowledge with ethnic heritage to maintain biocultural diversity in urbanized environments. Traditional ecological knowledge — passed through generations of direct experience — represents sophisticated systems understanding of sustainable agriculture, water management, and medicinal properties.
This is what we call the Bougainvillea Paradox: a plant non-native to Houston, ecologically sub-optimal, but culturally vital for Latin American neighbors as a symbol of heritage and home. We choose organized complexity over digital certainty — keeping both ecological and cultural conservation alive. Progress over perfection. If we purge the culture to save the nature, we lose the stewards. And without the stewards, the nature dies. Intergenerational knowledge transfer starts in pre-adolescence, when children are receptive and eager. The front yard garden is where grandmothers teach what no curriculum contains.
Sources: USDA NRCS, American Indian College Fund, Journal of Ethnobiology and Ethnomedicine, Holon Labs
iNaturalist has over 4.3 million observers documenting biodiversity worldwide. eBird's Christmas Bird Count is one of the longest-running citizen science projects in history. Texas Master Gardeners contribute 50+ volunteer hours each, tracked through formal service systems. NPSOT's four-level Native Landscape Certification Program trains residents to become ecological stewards. The SITES v2 rating system (15 prerequisites, 51 credits) provides institutional frameworks. Bee City USA and Bird City USA certify entire municipalities.
These are not marginal activities. This is the emergence of what Holon calls "enacted regulation" — bottom-up governance through exemplar and signal, not top-down ordinance. When your front yard is a data point in iNaturalist, a verified site in the Holon lattice, and a habitat certified by NWF, you are participating in a distributed civic infrastructure that no single institution could create. Community organizing around gardens increases voter turnout, volunteer hours, and cross-group trust. The garden is a commons. Stewarding it is a civic act.
Sources: iNaturalist, eBird, NPSOT, SITES, Bee City USA, Wildlife Habitat Council
The reasons to transform a front yard are not one thing. They are everything — ecological, social, economic, cultural, political, psychological, thermal, hydrological, acoustic, and civic. Every garden registered here is a data point in a larger story. Every species logged is evidence. Every steward walk is a relationship deepened. The metrics exist to coordinate collective action — but the garden itself is always more than its metrics.
You are not managing a dataset. You are stewarding a piece of the living world. And when your piece connects to your neighbor's piece, and theirs to the next, the lattice comes alive. This is how ten thousand small acts of relational stewardship become a new form of civilization — not imposed from above, but grown from the ground up.
Every garden on the Holon platform carries a Trust Score from 0 to 100. This is not a static rating assigned by an authority — it is a living measure that updates dynamically every time you take action. Add a species, complete a verification, log a steward walk, file an ecological assessment, engage with your community — and your Trust Score responds in real time.
Trust is what makes conservation work. In the traditional model, trust is enacted through legal instruments — land trusts, conservation easements — that require wealth, lawyers, and permanent land restrictions. In our model, trust is enacted through observable, repeated stewardship. It is built from the ground up by communities themselves, and it is the foundation that will eventually unlock real benefits for the gardens and stewards who earn it: recognition, resources, partnerships, and civic standing.
How rich is your garden's ecological foundation? This pillar measures profile completeness, native species diversity and vegetation layer variety, the ecological assessment modules you've completed (habitat, soil, pollinator, dark sky, bio-audit, and more), and the quality of your assessment scores. A garden with documented species, completed assessments, and strong ecological scores earns the full 25 points.
Has your garden been verified, and by whom? This pillar values the breadth of verified commitments, the reputation-weighted depth of verifications (experienced verifiers with higher credibility scores contribute proportionally more weight), whether your garden has achieved all three verification layers (self, peer, expert), and cross-verification from multiple independent verifiers.
Are you actively present with your garden? Frequency and quality of steward walks, care practice logs, and overall data recency all feed this pillar. Gardens that are actively tended and recently documented score higher than dormant ones. Rich observations — noting species, pollinator counts, and detailed notes — earn a quality multiplier.
Is your garden part of the community fabric? Neighbor engagement interactions, educational events you've hosted, garden stories you've shared, and endorsements from fellow stewards all strengthen this signal. Conduct reports act as a penalty, reducing this pillar for gardens with unresolved concerns.
Are you growing as a steward? Your progression through the Custode competency framework, your accumulated and verified service hours, and your overall growth level all contribute. This pillar rewards the commitment to learning and serving — not just having a garden, but becoming a better steward of it.
Is your stewardship sustained over time? This pillar measures how recently your garden data was updated, monthly consistency of engagement over the past year, and whether you engage across multiple seasons. Trust decays when gardens go dormant — a garden verified six months ago carries less weight than one verified last week. Consistent, year-round presence earns the full 15 points.
Time-Decay & Reputation Weighting: The Trust Score uses time-decay functions so that recent activity counts more than historical data — a verification from two weeks ago carries full weight, while one from six months ago carries only 25%. Verification integrity is reputation-weighted: verifiers who have completed more verifications and built higher credibility scores contribute proportionally more to a garden's trust. The σholon (Holon Conservation Constant) is a baseline multiplier that can be adjusted as the platform evolves through community governance.
This model embodies Holon's core philosophy: trust is not granted by institutions but enacted through practice. Every action you take compounds into a living measure of your garden's ecological integrity and your commitment to the land. The Trust Score is the bridge between individual stewardship and collective conservation — it is what will ultimately allow communities to demonstrate, at scale, that their care for the land is real, measurable, and worthy of recognition.
Holon uses a distributed, multilayer community verification system so that no single person or organization controls whether a garden is recognized. Each layer adds confidence independently.
Each verification layer builds community confidence in your stewardship practices. As more neighbors verify each other's gardens, collective recognition grows. This is social accountability through peer participation, not a legal or regulatory mechanism.
Professional verifiers are certified by Holon Gardens to conduct rigorous ecological surveys aligned with standards from organizations like the Audubon Society, NPSOT, ISA, and the Society for Ecological Restoration. Professional verifiers can conduct L3 Expert Audits — comprehensive site assessments including biodiversity inventories, soil health analysis, water management evaluation, and habitat quality scoring based on frameworks adapted from LEED, NWF Certified Wildlife Habitat, and ISO 14001 environmental standards.
Higher credibility weight, additional credits per verification, and ability to conduct official L3 Expert Audits with standardized survey protocols.
$200 certification feeBecome a Holon-certified professional verifier with enhanced credibility weight, higher credits per verification, and the ability to conduct official L3 inspections.
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Suggested lease addendum language to help renters get landlord permission for conservation commitments.
⚠ Disclaimer: These templates are suggestions only and do not constitute legal advice. Review any lease addendum with your landlord and consult a local tenant rights organization or attorney if needed.
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When a concern is raised about a garden, we follow a fair process:
How distributed, community-built trust is unlocking a transformation that traditional conservation never could.
Traditional conservation operates through legal land trusts and conservation easements — permanent deed restrictions that bind a property forever. They require expensive legal counsel, detailed appraisals, extensive documentation, and often reduce a property's market value. For a Houston homeowner making a $2,100 monthly mortgage payment — with nearly half going to escrow for taxes and insurance on their primary financial asset — entering a permanent legal agreement that could diminish that asset's value is not a difficult choice. It is a financially impossible one.
This system was designed for large, remote landscapes and the institutions wealthy enough to steward them. It has produced extraordinary results for wilderness preservation. But it was never designed for cities, and it cannot be adapted to them. Urban lots are small, ownership is fluid, and the people who live on the land are not philanthropists managing surplus acreage — they are families managing mortgages.
The consequence is a conservation gap at precisely the scale where it matters most. The places with the highest population density, the worst ecological degradation, and the greatest need for green infrastructure are the places where formal conservation mechanisms simply do not reach.
A conservation professional would rightly object: trust in conservation requires verification, and verification is expensive. Sending a certified ecologist to survey every quarter-acre lot in a metropolitan area of six million people is logistically absurd and financially ruinous. Traditional verification depends on credentialed experts, standardized protocols, and institutional oversight — systems that work for hundreds of large parcels but collapse at the scale of millions of small ones.
This is the problem that has kept urban land locked out of the conservation framework. Not a lack of will. Not a lack of ecological potential. A lack of scalable trust infrastructure.
This is where the transformative innovation lives. Holon Gardens does not attempt to scale the old model. It replaces it with a fundamentally different architecture of trust — one that is distributed, decentralized, and community-constructed.
No single layer is sufficient on its own. Together, they create a composite trust signal that grows stronger with each verification event. The system is designed so that trust is enacted — built through observable, repeated actions over time — rather than granted by a central authority. This is the critical distinction from traditional conservation, where trust flows downward from institutions. In community trust, it emerges upward from practice.
Traditional conservation trust costs thousands of dollars per parcel and takes months to establish. Community trust costs nothing per parcel and compounds with every interaction. The marginal cost of verifying the next garden approaches zero because the community itself provides the labor, the knowledge, and the accountability.
This means that for the first time, conservation can operate at the scale of the city — not parcel by parcel through legal instruments, but neighborhood by neighborhood through social infrastructure. A network of a million tiny lots, each verified by its neighbors, produces a collective ecological signal as robust as any institutional audit — and far more resilient, because it is not dependent on the funding or priorities of any single organization.
The community trust model unlocks another transformation: it elevates the act of stewardship above the requirement of ownership. In traditional conservation, only a landowner can enter a legal easement. In this model, a tenant who actively stewards a front-yard container garden, manages a compost system, and organizes neighbors has a more essential relationship to that space than a disconnected landlord. Commitment structures — subscription-style pledges, lease-term agreements, annually renewed "open source" commitments — remove the intimidating barrier of perpetuity and allow conservation to adapt to the fluid reality of modern urban life.
The impact of this model lies in aggregation. A single quarter-acre yard may seem ecologically insignificant. But if just 3% of front yards in a million-home city commit 500 square feet each to native habitat, that produces 30,000 micro-sanctuaries covering over 1,300 acres — an area larger than Central Park and Hermann Park combined, woven directly into the neighborhoods where people live. This distributed green infrastructure creates contiguous pollinator pathways, a city-scale stormwater sponge, and measurable reductions in the urban heat island effect.
What we are building here is not a replacement for traditional conservation. It is an extension into territory that traditional conservation was never designed to reach. Land trusts will continue to protect wilderness. Legal easements will continue to preserve agricultural landscapes. But the city — where most humans live, where ecological degradation is most acute, and where the potential for transformation is greatest — needs its own trust architecture.
That architecture is being built right here, by the people in this community, one verification at a time. Every time you verify a neighbor's garden, you are not just confirming that plants exist. You are constructing a new kind of civic infrastructure — one where trust is earned through care, credibility compounds through service, and conservation becomes accessible to everyone with a patch of soil and the willingness to steward it.
Every garden on the Holon platform carries a Trust Score from 0 to 100, calculated dynamically using a six-pillar model. This score is not a static rating — it is a living measure that updates every time you take action: adding species, completing a verification, logging a steward walk, filing an ecological assessment, or engaging with your community. The score reflects the universal trust equation:
The σholon (Holon Conservation Constant) is a baseline multiplier that can be adjusted as the platform evolves. Verification integrity is reputation-weighted: verifiers who have completed more verifications and built higher credibility scores contribute proportionally more to a garden's trust. Time-decay functions ensure that scores reflect current reality — a garden verified six months ago carries less weight than one verified last week.
This model embodies Holon's core philosophy: trust is not granted by institutions but enacted through observable, repeated stewardship. Every action you take compounds into a living measure of your garden's ecological integrity and your commitment to the land.
Based on the writings and research of Esteban Montero — Holon Foundation
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As artificial intelligence reshapes the global labor market, the Distributed Nursery Network offers a decentralized, human-powered economic model rooted in biological knowledge that AI cannot replace. Every node operator builds a livelihood around irreplaceable skills: reading soil, understanding local microclimates, stewarding biodiversity.
The Distributed Nursery Network isn't just an alternative supply chain. It's a prototype for how communities can create meaningful, resilient livelihoods in a world where traditional employment is no longer guaranteed.
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Create a node profile to list plants, track reputation, and become part of the Distributed Nursery Network.
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Browse growing tips, experiences, and advice shared by community members for specific plants. Click any plant in the Plants Library to see or add tips.
Search for a species name above, or visit the Plants Library to browse all species and their community tips.
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Find the right native plants for your garden. Filter by eco-region, sunlight, water needs, and pollinator benefits.
Our Plant Library currently features over 600 species, but represents only a fraction of the incredible botanical diversity in the Houston region and Texas.
We welcome and invite community contributions to help expand this database.
Many of our community members maintain their own systems of collecting plant wisdom — spreadsheets, documents, field guides, and databases. We want to provide a way for you to share this knowledge more broadly with the community.
Accepted formats: .xlsx, .xls, .csv, .pdf, .doc, .docx, .txt
The Community Nursery maintains a growing database of Texas native plants, Gulf Coast ecotypes, and regionally adapted species. Our inventory is sourced directly from community members who propagate plants from their own gardens, collect local-ecotype seeds, and steward species suited to our Houston-area climate and soils.
Plants in our system include keystone prairie species, pollinator-supporting wildflowers, drought-tolerant groundcovers, understory shrubs, shade trees, and food-producing natives. Every listing tracks provenance data — propagation method, collection origin, ecotype region, harvest date — so that buyers and traders can make informed decisions about what they are bringing into their landscapes.
Beyond plants, the marketplace supports the exchange of seeds, cuttings, garden tools, soil amendments, and educational materials that help our network grow together.
The Distributed Nursery Network is built on a simple principle: the best way to protect native plant biodiversity is to cultivate it widely. When neighbors share seeds, swap cuttings, and trade surplus plants, they create a living, decentralized seed bank that is far more resilient than any single institution.
Beyond material exchange, we share knowledge. Every listing can include plant care guides, personal growing tips, and provenance stories. Over time, this community wisdom becomes a living reference more valuable than any textbook — because it is rooted in our actual soil, our actual climate, our actual neighborhoods.
Tools and equipment are welcome too. Propagation trays, soil testing kits, pruners, and educational materials circulate through the network, lowering the barrier to entry for new growers and reducing waste.
Community plant exchange operates within a real regulatory framework. We have built compliance directly into the platform so that participants can share with confidence.
For full details, see our Native Plant Conservation & Regulatory Compliance Policy and our Terms of Service (Section 11.5).
Every plant in our system carries a conservation classification that reflects its ecological sensitivity. These classifications drive the automated screening logic that protects both our community and the ecosystems we depend on.
Our automated screening checks every listing against both our Supabase database and hardcoded regulatory lists. Protected species are blocked outright. Watchlist species require a cultivated-origin attestation, confirming the plant was nursery-propagated rather than wild-harvested, before it can be listed.
This dual-layer approach ensures compliance even when the database is temporarily unavailable, and it means the platform gets smarter over time as more species are added to our conservation records.
The Community Nursery now includes non-native species in its database — not to promote them, but to educate. We believe that informed gardeners make better choices for Texas ecosystems. When you search for or list a non-native plant, the system provides ecological context, research-backed warnings, and native alternatives you might not have considered.
We don't block non-native plant listings. Instead, the system:
Dr. Doug Tallamy's groundbreaking research at the University of Delaware shows that non-native ornamental plants support 29 times less animal diversity than native ornamentals. A single native oak hosts over 500 caterpillar species — the critical foundation of food chains — while non-native ornamentals host near zero.
96% of North American songbirds depend on caterpillars during breeding season. When we plant non-natives, we're not just replacing plants — we're dismantling the food webs that sustain birds, pollinators, and the entire ecosystem.
The goal isn't perfection — it's progress. Even adding a few native plants alongside your non-natives makes a measurable difference for pollinators, birds, and the broader Texas ecosystem. Native plants need far less maintenance, water, and chemicals, and they build resilient landscapes that support the living networks Texas ecosystems depend on.
The Nursery Network includes a comprehensive food intelligence layer. When you add food-producing species to your garden, the system provides culinary profiles, harvest tracking, and kitchen-ready information drawn from a database of over 50 species with 22 data dimensions each.
Food plants listed in the nursery marketplace automatically carry their food intelligence data. When buyers bring these plants into their gardens, the culinary profiles, planting calendars, and companion guild recommendations transfer with them.
Every food plant in the system is cross-referenced against nine allergen groups to help gardeners with sensitivities make informed decisions. This is especially important for community gardens, educational gardens, and households with children.
Set your personal allergen profile with severity levels (mild, moderate, severe, anaphylactic) and the system will flag plants in your garden and in nursery listings that may pose risks. Allergen data is stored privately per-user and is never shared with other community members.
When a front yard becomes a venue for a local artisan, a produce pop-up, or a community gathering, it creates economic activity that is inherently local, human, and resistant to automation. These micro-transactions are the seeds of a parallel economy built on proximity, reciprocity, and shared space.
In a post-AI disruption world, the most valuable asset may not be a skill set that can be automated next quarter—it may be the 30 feet between your front door and the sidewalk.
Discover events, workshops, and gatherings in your community.
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Rent front yard space for community events, vendor markets, workshops, or cooperative activities. Like Airbnb for your front yard.
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Activate your front yard as a community asset. List it for events, manage cooperative rentals, or launch fundraising campaigns for neighborhood causes.
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Your donation funds complete garden transformations for homeowners who lack the resources. Green-Tithing—those with means gift sanctuaries to those without. Every dollar is a seed planted in the commons.
Why monthly? Recurring gifts provide stable funding for year-round steward support, seasonal plantings, and ongoing verification.
One-time gifts of $500+ also available for full garden transformations.
Holon Foundation is a registered 501(c)(3) non-profit. All donations are tax-deductible. Automated receipts provided.
Every pin represents a front yard being transformed into a micro-sanctuary. Together, these individual actions form contiguous habitat corridors across our neighborhoods.
This map displays active and prospective steward locations across Houston. Exact addresses are anonymized to neighborhood-level for privacy.
Progress from Seed to Custode through hands-on learning, verified ecological action, and community engagement. Each stage unlocks new capabilities and recognition.
Begin your journey. Create an account, complete orientation, and register your first garden commitment.
Deepen your practice. Achieve peer verification, log species, and begin participating in the Nursery Network.
Become a verified leader. Pass professional bio-audit, mentor new stewards, and host community events.
The pinnacle of ecological stewardship. Operate a Nursery Node, train others, and shape the network's future.
Holon Gardens connects with individuals and organizations who share our belief that systemic change starts from the ground up—literally.
Jatziri Barron is a Houston-based Mexican muralist and visual artist from Guanajuato, Mexico, who uses art as a medium to advocate for cultural identity, diversity, and community unification. Trained at the Glassell School of the Museum of Fine Arts Houston, her work bridges cultural narratives with ecological consciousness—aligning with Holon's vision of the front yard as a space of belonging and transformation.
Visit Jatziri's Portfolio →Nilus is a Chilean climate infrastructure company tackling glacier retreat and water scarcity through the creation of artificial high-altitude ice reservoirs (“ice stupas”). By combining hydrology, advanced modeling, and nature-based engineering, Nilus develops scalable systems that store and regulate water in mountain ecosystems impacted by climate change — delivering verifiable water replenishment and contributing to long-term water resilience.
Learn About Nilus →ALMAAHH—Advocates of a Latino Museum of Cultural and Visual Arts & Archive Complex in Houston, Harris County—is building Houston's first comprehensive Latino museum dedicated to preserving, celebrating, and advancing Latino arts and cultures. With a 181,000-square-foot campus planned in Houston's historic East End, ALMAAHH connects art, community engagement, and cultural preservation in service of a more inclusive city—values deeply aligned with Holon's mission of transforming neighborhoods from the ground up.
Visit ALMAAHH →Friends of Columbia Tap Rail-Trail is a Houston-based organization founded by Edward D. Pettitt II dedicated to transforming the historic 4-mile Columbia Tap Trail—once a railway built by enslaved people to transport sugar and cotton—into a vibrant linear park and African American Heritage Interpretive Trail in Houston's Third Ward. Through community organizing, historical preservation, and green infrastructure, Friends of Columbia Tap shares Holon's commitment to building connected, equitable, and ecologically resilient neighborhoods from the ground up.
Learn About Columbia Tap →The Alley Theatre is Houston's Tony Award-winning resident theatre company—the oldest professional theatre in Texas and one of the oldest in the nation. Through a special partnership with Holon Gardens, the Alley Theatre offers exclusive benefits to registered Stewards, recognizing that ecological stewardship and cultural enrichment are complementary pillars of a thriving community. Sign up for micro-conservation through the Holon Trust Portal to unlock access to exclusive partner perks.
Visit Alley Theatre →Real-time ecological, social, and economic impact from our network of micro-conservation stewards.
Impact estimates derived from the Quantification of Urban Micro-Conservation framework using zone-specific ecological baselines. Data updated in real-time.
Writings from our founder exploring the ideas behind Holon Gardens—micro-conservation, systemic change, and the front yard as the new civic space.
How to transition cities from isolated assets to connected ecological networks through micro-conservation as "Relational Stewardship"—positioning the front yard as the new civic space.
Read on Substack →Treating literal gardens as complex adaptive systems and research laboratories for developing frameworks to solve intractable problems through collective cognition.
Read on Substack →The strategic shift from Holon Games to micro-conservation—applying game-design principles about collective coordination to create contiguous ecological networks.
Read on Substack →Gardening and community-based ecological restoration as fundamentally superior to technological isolation for long-term resilience and survival.
Read on Substack →How gardens serve as R&D paradigms for collective cognitive technology, drawing parallels to embodied AI development in complex urban environments.
Read on Substack →How organizations can be structured like perennial ecosystems for sustainability, long-term viability, and regenerative growth beyond quarterly thinking.
Read on Substack →
Holon Labs began as a research inquiry into collective cognition—how groups of individuals can think, adapt, and evolve together as a coherent whole. The question was fundamental: what are the conditions under which collective intelligence emerges?
The answer turned out to be surprisingly concrete. Collective cognition requires shared material practice—not ideology, not abstract agreement, but the physical act of co-creating something living together. The garden became the laboratory. The front yard became the thesis.
Holon Gardens is the applied expression of this research. Every micro-sanctuary is a "collective computer"—a node in a distributed network where ecological data, social connection, and cultural meaning are produced simultaneously. The gardening is the computing.
Our vision is not centered on the landscaping industry. It is about the cascading impact of front yard transformation across ecology, society, culture, economy, and political systems. The landscaping industry is merely the terrain where we are proving that a non-profit model can outperform extraction.
Read the Holon Substack →Like every garden, our platform grows in seasons. We are listening to feedback, cultivating new ideas, and preparing new areas of the site to better serve our community. Below are some of the things currently germinating.
We are preparing a dedicated space for learning materials, guides, and resources that explore the multiple dimensions of transformation through the front yard — from ecology and native planting to community building, economic resilience, and cultural stewardship. This section will grow into a living library for anyone ready to deepen their understanding of micro-conservation.
Soon this section will list opportunities to work with Holon Gardens, volunteer for conservation events, and contribute your skills to our growing network. We believe that meaningful change happens when people show up — with their hands, their knowledge, and their care.
In the meantime, if you are interested in joining us, volunteering, or collaborating in any way, we’d love to hear from you. Reach out directly through our contact form:
Reach Out to Holon Gardens →
Conserving the relationship between people and place.
Whether you're a homeowner ready to reclaim your front yard, a commercial property owner seeking ecological leadership, or an organization looking to partner—we'd love to hear from you.
Residential: Native garden design, installation, and Transitional Stewardship. DIY support, verification, and community membership.
Commercial: Master planning, ecological installation, ongoing stewardship, bio-audit certification for ESG, and employee engagement programs.
3% Initiative: Donated garden applications, sponsorship programs, and community organizing.
Network: Distributed Nursery participation, Front Yard Asset marketplace, and supply-side certification.
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These suggested lease addendum clauses can help you get landlord permission for conservation commitments. Click any commitment below to view and copy the full lease language. This is not legal advice.
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A 501(c)(3) non-profit pioneering community-verified ecological stewardship through native habitat restoration.
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