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Organization Location Revenue Expenses Assets Program Fundr. cost Employees Type Follow
American Ornithological Society Advancing the scientific knowledge and conservation of birds 72-6019246 · FY2024 Chicago, IL $2.3M $1.7M $34.7M 78% 0% 8 501(c)(3)
Photographic Society of America Promotion of the arts and sciences of photography 23-1352299 · FY2024 Oklahoma City, OK $1.4M $1.5M $4.2M 59% 0% 6 501(c)(3)
The North American Hair Research Society To promote scientific research and education in the field of the normal and disordered hair growth 36-4477156 · FY2024 Elgin, IL $1.3M $1.2M $432.3K 87% 0% — 501(c)(3)
Walking Iris Media To produce public educational documentary motion pictures and other MEDIA, and to support and service… 27-3712050 · FY2024 San Francisco, CA $1.2M $1.5M $1.4M 99% 0% 4 501(c)(3)
Santa Fe Botanical Garden Education and community service on topics of horticulture and the environment. 85-0366754 · FY2024 Santa Fe, NM $1.0M $1.2M $5.5M 67% 7% 10 501(c)(3)
American Rhododendron Society Portland Chapter The promotion of genus RHODODENDRON. 93-6032883 · FY2023 Fairview, OR $863.2K $703.2K $6.5M 99% 0% — 501(c)(3)
America in Bloom Promote beautification programs and community involvement and provide educational programs 01-0622507 · FY2024 Columbus, OH $573.3K $415.6K $581.9K 75% 1% — 501(c)(3)
Polymer Chemistry Division Education and dissemination of scientific information 04-6167821 · FY2025 Blacksburg, VA $484.0K $497.2K $1.3M 63% 0% — 501(c)(3)
Potato Association of America Research and education 22-1726332 · FY2024 Saint Paul, MN $396.8K $496.7K $352.4K 73% 0% — 501(c)(3)
The Fellowship of Subtle Light INC Study and teach spiritual principles and to provide a community garden 59-2710251 · FY2024 Miami, FL $393.9K $12.8K $1.1M 100% 0% — 501(c)(3)
Alta Vista Botanical Gardens A BOTANICAL garden providing education, enrichment and community involvement. 33-0877525 · FY2024 Vista, CA $381.6K $310.1K $496.2K 100% 0% 1 501(c)(3)
Glaucoma Research and Education Group INC GLAUCOMA RESEARCH and EDUCATION 94-3208182 · FY2024 San Francisco, CA $348.6K $336.5K $33.8K 88% 0% — 501(c)(3)
Hulda Klager Lilac Gardens Preservation and education 51-0192908 · FY2024 Woodland, WA $266.2K $188.2K $1.1M 89% 0% — 501(c)(3)
Garden Club of Ohio INC C/O Kim Overholt Promotion of horticultural education 34-0796436 · FY2023 East Rochester, OH $247.3K $182.2K $2.4M 80% 0% — 501(c)(3)
Colorado Native Plant Society Furthering the knowledge, appreciation and conservation of native plants and habitats of Colorado through… 84-0734596 · FY2024 Aurora, CO $245.8K $222.9K $709.6K 79% 7% 3 501(c)(3)
Virginia Forage and Grassland Counc Agricultural education 54-1061472 · FY2024 Verona, VA $245.6K $215.0K $282.4K 89% 0% — 501(c)(3)
Southeastern Planetarium Association Education and support of planetariums in the southeastern United States 80-0444010 · FY2023 Glen Allen, VA $240.9K $222.8K $285.4K 100% 0% — 501(c)(3)
California Rare Fruit Growers INC Education in growing rare fruit plants 23-7082170 · FY2024 Calabasas, CA $237.3K $173.6K $2.4M 77% 0% — 501(c)(3)
Bloom and Grow Garden Society INC Promote horticultural awareness and beautification 57-1184124 · FY2024 Oakland, FL $235.9K $222.0K $199.2K 92% 0% — 501(c)(3)
American Society of Plant Taxonomists Provide information to botanists 37-0952268 · FY2024 Washington, DC $234.0K $131.5K $2.3M 75% 0% — 501(c)(3)
The Optometric Glaucoma Society Educational and scientific research in the field of Glaucoma 55-0794410 · FY2025 Lawrence, KS $224.9K $264.6K $123.4K 72% 0% 1 501(c)(3)
Colorado Horticulture Research & Education Foundation Funding for RESEARCH in the HORTICULTURE industry 74-2492848 · FY2024 Lakewood, CO $224.9K $111.5K $1.3M 100% 0% — 501(c)(3)
Turfgrass Water Conservation Alliance Limited Environmental Research and Education for Lawns and Turfgrass usage 27-3209664 · FY2024 Lebanon, OR $178.0K — $136.0K — — — 501(c)(3)
Society for Vector Ecology Promotion of scientific education publication of a biannual online journal 23-7109235 · FY2024 Ontario, CA $166.9K $155.9K $499.2K 54% 0% — 501(c)(3)
Microbeam Analysis Society INC Sharing of microbeam analysis knowledge & ideas 23-7044608 · FY2024 Lewisburg, OH $152.9K $109.5K $1.0M 47% 0% — 501(c)(3)
American Forage and Grassland Council Education related to the FORAGE and GRASSLAND industry 25-1155822 · FY2024 Berea, KY $145.2K $135.6K $368.0K 50% 0% — 501(c)(3)
The International Society for Eye Research INTERNATIONAL EYE RESEARCH 51-0171667 · FY2024 Coralville, IA $143.8K $240.6K $597.1K 94% 0% — 501(c)(3)
Indianapolis Garden Club Horticulture education and beautification 35-6043503 · FY2024 Indianapolis, IN $143.1K $135.1K $418.3K 68% 0% — 501(c)(3)
National Glaucoma Society Educational advancement of healthcare professionals in the field of GLAUCOMA 20-1497433 · FY2024 Andover, MA $134.3K — $0 — — 1 501(c)(3)
New England Botanical Club INC The mission of the New England Botanical Society (sic New England Botanical Club, Inc.) is to increase the… 04-6042239 · FY2024 Cambridge, MA $130.8K $96.7K $2.9M 60% 0% 1 501(c)(3)
Mesilla Valley Iris Society 46-4383509 · FY2021 Las Cruces, NM $130.8K — $0 — — — 501(c)(3)
Association of Zoological Horticulture 52-1379826 · FY2025 Pittsburgh, PA $116.1K — $160.0K — — — 501(c)(3)
American Chemical Society Agrochemical Division Dissemination of scientific information relating to chemistry for and/or from agriculture 51-0193197 · FY2024 Columbia, MO $113.2K $215.7K $565.1K 98% 0% — 501(c)(3)
Iris of the Garden Montessori Center INC 93-1956490 · FY2024 Lutz, FL $110.0K — $34.9K — — — 501(c)(3)
Iris Society of Dallas 81-0596000 · FY2023 Dallas, TX $109.4K — $0 — — — 501(c)(3)
Citizens Committee of the Presby Memorial Iris Gardens of Montclair Establish a living museum and maintain records of IRIS varieties and display in GARDENS; care for the garden… 22-6064413 · FY2024 Montclair, NJ $84.6K $133.6K $1.4M 69% 10% 6 501(c)(3)
San Diego Rose Society To promote the national flower, the ROSE, and ROSE gardening 95-6100556 · FY2025 San Diego, CA $74.4K — $89.1K — — — 501(c)(3)
Diversity Perspective INC Public awareness of optometry 85-2447823 · FY2025 Palm Bch Gdns, FL $67.7K $82.0K $56.1K 39% 38% — 501(c)(3)
Hudson Garden Club INC Spreading the knowledge of gardening, the beautification of public property and the support of education in… 34-6542336 · FY2024 Hudson, OH $59.0K — $77.4K — — — 501(c)(3)
The Glaucoma Education & Research Fund INC 26-1849106 · FY2024 New York, NY $45.0K — $156.7K — — — 501(c)(3)
2,046,138
nonprofits
212,946
funders
12,515,252
grants
22,549,931
directors
214,365
service providers
549,896,012
financial lines
Public data from IRS Form 990 e-file & Business Master File. A 990 shows reported financial activity, not measured program outcomes. Assets are from the IRS BMF and may lag the latest filing; fundraising cost is fundraising expenses as a share of total expenses. · philanthropy.org