Arboretum Foundation
Funding Overview
From IRS Form 990 filings · 2019–2025
Total received
$8.3M
Foundation funders
52
Grants recorded
173
Years covered
2019–2025
Who funds Arboretum Foundation?
Arboretum Foundation is funded by 52 grantmakers, led by The Aldarra Foundation ($5.5M), John Jewett & Helen Chandler Garland Fou ($775K), Morgan Stanley Global Impact Funding Trust Inc ($462K). In total, IRS Form 990 filings record $8.3M in grants to Arboretum Foundation between 2019–2025.
Show all 52 funders
Funding over time
Grant dollars and counts received per year
From 2019 to 2025, annual grant giving ranged from $10K (2019) to $2.8M (2024). In 2025 it made 13 grants totaling $595K.
What grants has Arboretum Foundation received?
Individual grants from IRS Form 990 filings, newest first
| Year | Funder | Purpose | Amount |
|---|---|---|---|
| 2025 | John Jewett & Helen Chandler Garland Fou | Restoration of Blanche Hinman Garland Orchid House | $475,000 |
| 2025 | Pendleton and Elisabeth Carey Miller | MILLER SEED VAULT:WA RARE PLANT CARE & CONSERVATION PROGRAM | $41,000 |
| 2025 | Peach Foundation | ENVIRONMENTAL WORK | $30,000 |
| 2025 | Pendleton and Elisabeth Carey Miller | GARDEN STEWARDS VOLUNTEER PROGRAM | $12,650 |
| 2025 | Seattle Garden Club Inc | See Schedule I, Part IV For Purpose | $10,000 |
| 2025 | Larry Benaroya Family Foundation | UNRESTRICTED | $10,000 |
| 2025 | Humanitix USA Limited | SUPPORT ORGANIZATION | $6,600 |
| 2025 | Janet Wright Ketcham Foundation | TO PROVIDE SUPPORT TO EXEMPT ORGANIZATION | $5,000 |
| 2025 | The Rouse Family Foundation Inc | UNRESTRICTED | $1,500 |
| 2025 | Keith & Mary Kay McCaw Family Found | PERSERVING ARBORETUM | $1,000 |
| 2025 | Norman Raab Foundation | EDUCATION | $1,000 |
| 2025 | Owen M Johnson Family Foundation | DONATION | $1,000 |
| 2025 | Baird Foundation Inc | ENVIRONMENT | $50 |
| 2024 | The Aldarra Foundation | VARIOUS PROJECTS | $2,200,000 |
| 2024 | John Jewett & Helen Chandler Garland Fou | Visitor Plaza Project | $100,000 |
| 2024 | William a Looney Family Foundation | to support the Pavilion Project at the Seattle Japanese Garden | $100,000 |
| 2024 | Seattle Foundation | CIVIC AND CULTURAL PROGRAMMING | $100,000 |
| 2024 | Islands Fund | ENVIRONMENTAL EDUCATION PROGRAMS FOR SCHOOLS | $70,000 |
| 2024 | Farallon Foundation | Environment Protection | $55,000 |
| 2024 | WWW Foundation | WASHINGTON PARK ARBORETUM | $30,000 |
| 2024 | Seattle Foundation | FOR THE ARBORIST/HORTICULTURE PROGRAM | $30,000 |
| 2024 | Marie Lamfrom Charitable Foundation 091898 | RESTRICTED PROGRAMMING (ROSE GRANT) | $20,000 |
| 2024 | GS Donor Advised Philanthropy Fund for Wealth Management Inc | ENVIRONMENT & ANIMAL PROTECTION | $20,000 |
| 2024 | Pendleton and Elisabeth Carey Miller | GARDEN STEWARDS VOLUNTEER PROGRAM. | $12,500 |
| 2024 | Juniper Foundation | FIDDLEHEADS FOREST SCHOOL | $12,000 |
| 2024 | The Independent Charitable Gift Fund | GENERAL SUPPORT | $10,190 |
| 2024 | Mightycause Charitable Foundation | UNRESTRICTED | $6,960 |
| 2024 | The US Charitable Gift Trust | FOR RECIPIENT'S EXEMPT PURPOSE | $6,500 |
| 2024 | Vanguard Charitable Endowment Program | FOR RECIPIENT'S EXEMPT PURPOSE | $5,200 |
| 2024 | Seattle Foundation | EQUIPMENT FOR PLANTS FACING CLIMATE THREATS. | $3,000 |
Showing 30 most recent of 173 recorded grants.
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Frequently Asked Questions
Who funds Arboretum Foundation?
Arboretum Foundation is funded by 52 grantmakers, led by The Aldarra Foundation ($5.5M), John Jewett & Helen Chandler Garland Fou ($775K), Morgan Stanley Global Impact Funding Trust Inc ($462K). In total, IRS Form 990 filings record $8.3M in grants to Arboretum Foundation between 2019–2025.
Who is Arboretum Foundation's largest funder?
The Aldarra Foundation is the largest recorded funder of Arboretum Foundation, with $5.5M across 6 grants (2020–2024).
How much grant funding has Arboretum Foundation received?
IRS 990 filings record $8.3M in grants to Arboretum Foundation across 173 grants from 52 funders between 2019–2025. Filings are published on a delay, so recent grants may not appear yet.
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Grant data is drawn from IRS Form 990 filings via Grantable's GrantGraph™. Filings are published on a delay; recent grants may not appear yet.
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