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Private foundations don’t post open calls, so nobody can search them. We read IRS filings instead — 9.6 million grants from 174,053 foundations and grantmaking charities, searchable by what the money was actually for.

12 funders with a record of paying for “horticulture”

Where the money went

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The William Penn Foundation → Pennsylvania Horticultural Society: $5.4M across 11 grants, latest 2024William T Kemper Foundation → Wellesley College: $1.1M across 4 grants, latest 2023Burpee Foundation → The Horticultural Society of New Yo: $550K across 2 grants, latest 2024The Community Foundation of Louisville → Waterfront Botanical Gardens: $405K across 4 grants, latest 2024Dr Scholl Foundation → Chicago Horticultural Society - Chicago Botanic Garden: $300K across 3 grants, latest 2024The Bank of America Charitable → Pennsylvania Horticultural Societ: $230K across 3 grants, latest 2023John D and Catherine T Macarthur Foundation (Consolidated) → Chicago Horticultural Society: $203K across 5 grants, latest 2023Gs Donor Advised Philanthropy Fund → Chicago Horticultural Society: $198K across 3 grants, latest 2024Td Charitable Foundation → Pennsylvania Horticultural Society: $55K across 4 grants, latest 2024Louise B Belsterling Foundation → Texas Am: $45K across 3 grants, latest 2024Myron A & Anita E Pinkus Charitable → Penn State University Horticultural Studies Department: $36K across 3 grants, latest 2025Hillsborough Garden Club Trust → Hillsborough Garden Club: $20K across 3 grants, latest 2024Burpee Foundation → The Pennyslvania Horticultural: $150K across 2 grants, latest 2023The Bank of America Charitable → Pennsylvania Horticultural Society: $124K across 4 grants, latest 2022Gs Donor Advised Philanthropy Fund → Delaware Center for Horticulture Inc: $66K across 3 grants, latest 2024John D and Catherine T Macarthur Foundation (Consolidated) → Chicago Horticultural Society: $50K across 1 grant, latest 2024Louise B Belsterling Foundation → Texas Tech: $45K across 3 grants, latest 2024Dr Scholl Foundation → Arizona Nursery Association Foundation: $45K across 3 grants, latest 2024The Community Foundation of Louisville → Wave Hill Incorporated: $32K across 4 grants, latest 2024Myron A & Anita E Pinkus Charitable → Penn State Dickinson Law School Scholarship Fund: $12K across 1 grant, latest 2022Td Charitable Foundation → Search Day Program Inc: $10K across 2 grants, latest 2022Hillsborough Garden Club Trust → Peninsula Open Space Trust: $10K across 2 grants, latest 2024The Bank of America Charitable → Delaware Center for Horticulture: $119K across 4 grants, latest 2023Burpee Foundation → YMCA of Bucks and Hunterdon: $104K across 2 grants, latest 2023Gs Donor Advised Philanthropy Fund → Pennsylvania Horticultural Society: $26K across 2 grants, latest 2024John D and Catherine T Macarthur Foundation (Consolidated) → West Michigan Horticultural Society Inc: $14K across 1 grant, latest 2022Myron A & Anita E Pinkus Charitable → Elan Gardens: $10K across 2 grants, latest 2024Hillsborough Garden Club Trust → Elkhorn Slough: $10K across 2 grants, latest 2024Td Charitable Foundation → Charleston Parks Conservancy: $5K across 1 grant, latest 2021Dr Scholl Foundation → American Horticultural Society: $5K across 1 grant, latest 2024The Bank of America Charitable → Chicago Horticultural Society: $93K across 3 grants, latest 2023Burpee Foundation → The Trust for Public Land: $90K across 3 grants, latest 2023Burpee Foundation → Queens Botanical Garden Society: $80K across 4 grants, latest 2024Burpee Foundation → The Bridge: $75K across 1 grant, latest 2022Burpee Foundation → Allies Inc: $47K across 4 grants, latest 2024The Bank of America Charitable → Delaware Center for Horticulture I: $46K across 3 grants, latest 2022Burpee Foundation → Smithsonian Institution: $42K across 1 grant, latest 2022Burpee Foundation → Services for the Underserved: $40K across 3 grants, latest 2023Burpee Foundation → Goddard Riverside Community Center: $40K across 2 grants, latest 2023Burpee Foundation → Brooklyn Botanical Garden: $30K across 2 grants, latest 2023Burpee Foundation → Tri State Bird Rescue & Research: $18K across 1 grant, latest 2022Burpee Foundation → Garden Time Inc: $15K across 1 grant, latest 2022Burpee Foundation → The Fortune Society: $15K across 1 grant, latest 2022Burpee Foundation → The Guidance Center of Westchester: $10K across 2 grants, latest 2023Burpee Foundation → Presbyterian Senior Services: $10K across 1 grant, latest 2022Hillsborough Garden Club Trust → Hillsborough Beautification Foundation: $6K across 3 grants, latest 2024Hillsborough Garden Club Trust → Save the Bay: $5K across 1 grant, latest 2022Burpee Foundation → Mianus River Gorge Inc: $5K across 1 grant, latest 2022Myron A & Anita E Pinkus Charitable → Elan Gardens: $5K across 1 grant, latest 2022Hillsborough Garden Club Trust → Pie Ranch: $3K across 1 grant, latest 2022Hillsborough Garden Club Trust → San Francisco Botanical Garden Society: $1K across 1 grant, latest 2023Hillsborough Garden Club Trust → Heal: $1K across 1 grant, latest 2022The William Penn Foundation: $5.4M on this topic. Open the funder.The William Penn Foundation$5.4MBurpee Foundation: $1.3M on this topic. Open the funder.Burpee Foundation$1.3MWilliam T Kemper Foundation: $1.1M on this topic. Open the funder.William T Kemper Foundation$1.1MThe Bank of America Charitable: $611K on this topic. Open the funder.The Bank of America Charitable$611KThe Community Foundation of Louisville: $437K on this topic. Open the funder.The Community Foundation of L…$437KDr Scholl Foundation: $350K on this topic. Open the funder.Dr Scholl Foundation$350KGs Donor Advised Philanthropy Fund: $289K on this topic. Open the funder.Gs Donor Advised Philanthropy…$289KJohn D and Catherine T Macarthur Foundation (Consolidated): $266K on this topic. Open the funder.John D and Catherine T Macart…$266KLouise B Belsterling Foundation: $90K on this topic. Open the funder.Louise B Belsterling Foundati…$90KTd Charitable Foundation: $70K on this topic. Open the funder.Td Charitable Foundation$70KMyron A & Anita E Pinkus Charitable: $63K on this topic. Open the funder.Myron A & Anita E Pinkus Char…$63KHillsborough Garden Club Trust: $55K on this topic. Open the funder.Hillsborough Garden Club Trust$55KPennsylvania Horticultural Society: received $5.6M on this topicPennsylvania Horticultural Soci…$5.6MWellesley College: received $1.1M on this topicWellesley College$1.1MThe Horticultural Society of New Yo: received $550K on this topicThe Horticultural Society of Ne…$550KWaterfront Botanical Gardens: received $405K on this topicWaterfront Botanical Gardens$405KChicago Horticultural Society: received $340K on this topicChicago Horticultural Society$340KChicago Horticultural Society - Chicago Botanic Garden: received $300K on this topicChicago Horticultural Society -…$300KPennsylvania Horticultural Societ: received $230K on this topicPennsylvania Horticultural Soci…$230KChicago Horticultural Society: received $203K on this topicChicago Horticultural Society$203KThe Pennyslvania Horticultural: received $150K on this topicThe Pennyslvania Horticultural$150KDelaware Center for Horticulture: received $119K on this topicDelaware Center for Horticulture$119KYMCA of Bucks and Hunterdon: received $104K on this topicYMCA of Bucks and Hunterdon$104KThe Trust for Public Land: received $90K on this topicThe Trust for Public Land$90KQueens Botanical Garden Society: received $80K on this topicQueens Botanical Garden Society$80KThe Bridge: received $75K on this topicThe Bridge$75KDelaware Center for Horticulture Inc: received $66K on this topicDelaware Center for Horticultur…$66KAllies Inc: received $47K on this topicAllies Inc$47KDelaware Center for Horticulture I: received $46K on this topicDelaware Center for Horticultur…$46KTexas Am: received $45K on this topicTexas Am$45KTexas Tech: received $45K on this topicTexas Tech$45KArizona Nursery Association Foundation: received $45K on this topicArizona Nursery Association Fou…$45KSmithsonian Institution: received $42K on this topicSmithsonian Institution$42KServices for the Underserved: received $40K on this topicServices for the Underserved$40KGoddard Riverside Community Center: received $40K on this topicGoddard Riverside Community Cen…$40KPenn State University Horticultural Studies Department: received $36K on this topicPenn State University Horticult…$36KWave Hill Incorporated: received $32K on this topicWave Hill Incorporated$32KBrooklyn Botanical Garden: received $30K on this topicBrooklyn Botanical Garden$30KHillsborough Garden Club: received $20K on this topicHillsborough Garden Club$20KTri State Bird Rescue & Research: received $18K on this topicTri State Bird Rescue & Research$18KGarden Time Inc: received $15K on this topicGarden Time Inc$15KThe Fortune Society: received $15K on this topicThe Fortune Society$15KWest Michigan Horticultural Society Inc: received $14K on this topicWest Michigan Horticultural Soc…$14KPenn State Dickinson Law School Scholarship Fund: received $12K on this topicPenn State Dickinson Law School…$12KSearch Day Program Inc: received $10K on this topicSearch Day Program Inc$10KElan Gardens: received $10K on this topicElan Gardens$10KThe Guidance Center of Westchester: received $10K on this topicThe Guidance Center of Westches…$10KPresbyterian Senior Services: received $10K on this topicPresbyterian Senior Services$10KPeninsula Open Space Trust: received $10K on this topicPeninsula Open Space Trust$10KElkhorn Slough: received $10K on this topicElkhorn Slough$10KHillsborough Beautification Foundation: received $6K on this topicHillsborough Beautification Fou…$6KCharleston Parks Conservancy: received $5K on this topicCharleston Parks Conservancy$5KAmerican Horticultural Society: received $5K on this topicAmerican Horticultural Society$5KSave the Bay: received $5K on this topicSave the Bay$5KMianus River Gorge Inc: received $5K on this topicMianus River Gorge Inc$5KElan Gardens: received $5K on this topicElan Gardens$5KPie Ranch: received $3K on this topicPie Ranch$3KSan Francisco Botanical Garden Society: received $1K on this topicSan Francisco Botanical Garden…$1KHeal: received $1K on this topicHeal$1K
12 funders, 47 recipients, grants matching “horticulture” only. Ribbon width is proportional to the total given; each funder has its own colour (smaller funders in gray). Hover a name to isolate its flows, click a funder to open it. Drag to move around; zoom with the buttons, a double-click, or the wheel after clicking the map.

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Source: IRS Form 990-PF Part XV and Form 990 Schedule I, tax years 2019–2025. These are grants already paid, a record of what an organization funds rather than an open call. Private foundations rarely accept unsolicited applications and the route in is usually a program officer; grantmaking charities and associations more often run real application cycles, so check their website. How this data is built, and its limits →