Oak Spring Garden Foundation
Oak Spring Garden Foundation (OSGF) is a private foundation based in Upperville, Virginia. It perpetuates and shares the gifts of Rachel (“Bunny”) Lambert Mellon, including her residence, garden, estate, and library, and supports scholarship and public dialogue about plants, gardens, landscapes, and plants’ importance to human well-being.
Key facts about Oak Spring Garden Foundation
In short: Oak Spring Garden Foundation gave $193K across 80 grants in 2024 (avg $2K), top state California. Source: 2024 IRS Form 990-PF.
- EIN
- 54-1672141
- Latest 990 filing
- Form 990-PF, 2024
- Annual giving (2024)
- $193,425
- Grants made (2024)
- 80
- Average grant
- $2,418
- Median grant
- $1,600
- Total assets
- $312,272,683
- Primary geography
- California (10% of itemized 2024 grant dollars)
- Accepts unsolicited proposals
- No
- How to apply
- OSGF states that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Full details ↓
Data from IRS Form 990-PF, 2024; updated September 2026. Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Financial Overview
From 2024 IRS Form 990-PF · View filing
Total Assets
$312.3M
+5.7% YoY
Annual Giving
$193K
+41.6% YoY
Grant Count
80
-3.6% YoY
Avg Grant Size
$2K
+46.9% YoY
How Oak Spring Garden Foundation gives
- Giving grew 89% from 2021 to 2024. Method
From the foundation's IRS Form 990-PF filings. Methodology.
Mission & Focus Areas
OSGF’s mission is to perpetuate and share Bunny Mellon’s gifts in the public interest, and to inspire and facilitate scholarship and public dialogue on the history and future of plants. Its guiding principles are Theory + Practice, Underrepresented Voices, and Interdisciplinarity—bringing together the sciences, humanities, and social sciences.
Its fellowships support early-career practitioners and scholars in areas including artistic work engaging with nature, bibliographic study of plants and landscapes, plant science, and plant conservation. Residencies serve people working in the arts, humanities, plant sciences, and plant or landscape conservation, among other fields, whose projects relate to OSGF’s mission.
Grantmaking
In filing year 2024, OSGF reported 80 grants totaling $193,425. The median grant was $1,600, with individual grants ranging from $150 to $15,000. Examples include $15,000 to Scott Meiners for a plant conservation and plant science research sabbatical; $10,175 to Panos Aprahamian for the Eliza Moore Fellowship for Artistic Excellence; and $10,000 each to Allison Fulton and Joseph Litts for the Stacy Lloyd Fellowship for Bibliographic Studies. Other $10,000 awards included fellowships for plant conservation biology and plant science research. OSGF also reported a $2,500 grant to Doc Week Middleburg for its film festival and $2,000 each to Abby Swidler and Aliyana Gewirtzman for an interdisciplinary residency.
How to Apply
es. The website lists applications for 2028 programs as open February 14–May 31, 2027.
Open Grants
4 open opportunities from Oak Spring Garden Foundation
Eliza Moore Fellowship Grant
Oak Spring Garden Foundation
Amount
US $10,000
Deadline
Rolling / Open
Plant Conservation Biology Fellowship Grant
Oak Spring Garden Foundation
Amount
US $10,000
Deadline
Rolling / Open
Plant Science Research Fellowship Grant
Oak Spring Garden Foundation
Amount
US $10,000
Deadline
Rolling / Open
Ready to take the next step with Oak Spring Garden Foundation?
Geographic Focus
Where this funder awards grants
The 2024 filing lists recipients in multiple states. The largest reported shares of grant dollars were attributed to California (10%), New Hampshire (10%), Illinois (9%), and New York (8%); the first state entry in the supplied data is unspecified (“?”) and accounts for 11%.
Grant Distribution by State
Share of 2024 grant dollars across all 80 itemized grants.
States
Cities
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2024, annual grant giving ranged from $79K (2020) to $193K (2024). In 2024 it made 80 grants totaling $193K.
Grant Insights
How this funder distributes its grants
Top Recipients
Top 5 recipients in 2024
The largest 2024 recipient was Juliane Shibata Arts LLC ($2K). Together the top 5 received $6K.
Organizations only. It also paid 75 grants to individuals ($187,175), which are not listed by name.
Grant Size Distribution
279 grants across all recorded years
The most common grant size was under $50K: 279 grants of 279 (100%).
Giving History
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| 47 grants to individuals Recipients not named | — | $164,575 |
| Juliane Shibata Arts LLC Northfield, MN | 2024 Interdisciplinary Residency | $2,000 |
| Stephanie Sin-Yun Shih DBA Thisissh Los Angeles, CA | 2024 Interdisciplinary Residency | $2,000 |
| Richard Vanderplas DBA Edenopolis L New York, NY | Culinary Residency 2024 | $1,600 |
Financial History
Multi-year comparison from IRS filings
| Filing year | Assets | Revenue | Expenses | Grants |
|---|---|---|---|---|
| 2024 | $312,272,683 | $27,807,008 | $12,401,296 | $193,425 (80 grants) |
| 2023 | $295,388,979 | $5,780,293 | $11,822,114 | $136,624 (83 grants) |
| 2022 | $269,149,968 | $5,436,061 | $11,246,354 | $122,721 (57 grants) |
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | $312,272,683 | $295,388,979 | $269,149,968 |
| Revenue | $27,807,008 | $5,780,293 | $5,436,061 |
| Expenses | $12,401,296 | $11,822,114 | $11,246,354 |
| Qualifying Distributions | $10,159,740 | $10,037,011 | $8,083,017 |
| Net Investment Income | $25,721,117 | $4,138,046 | $2,924,344 |
Data update history
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2024
Leadership & Key People
Leadership team and compensation from IRS filings
The 2024 filing lists Peter Crane as president, Stephanie Murdaugh as treasurer, and W. Taylor Reveley III, JD, as chairman. Listed board members are Lewis W. Bernard, Dorothy Robinson, JD, Rebecca Duseau, Michael Donoghue, Marcia Marsh, Julia Reidhead, and Lisa Hess.
Oak Spring Garden Foundation is led by Peter Crane, President on every filing since 2020; 2 of 10 officers listed in 2024 are compensated.
Officers on the 2024 filing
Peter Crane
President
On filings since 2020
40 hrs/week
$567K (2020) → $613K (2024)
W. Taylor Reveley III JD
Chairman
On filings since 2020
2 hrs/week
No compensation reported
Stephanie Murdaugh
Treasurer
On filings since 2023
40 hrs/week
$96K (2023) → $116K (2024)
Dorothy Robinson JD
Board Member
On filings since 2020
2 hrs/week
No compensation reported
Lewis W. Bernard
Board Member
On filings since 2020
2 hrs/week
No compensation reported
Rebecca Duseau
Board Member
On filings since 2020
2 hrs/week
No compensation reported
Julia Reidhead
Board Member
On filings since 2022
2 hrs/week
No compensation reported
Marcia Marsh
Board Member
On filings since 2022
2 hrs/week
No compensation reported
Michael Donoghue
Board Member
On filings since 2022
2 hrs/week
No compensation reported
Lisa Hess
Board Member
On filings since 2023
2 hrs/week
No compensation reported
Former officers (2)
- Former: Tony Willis (2020–2022) — Treasurer
- Former: Thomas E. Lovejoy PhD (2020–2021) — Board Member
Data from IRS Form 990 filings, 2020–2024. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2024 IRS filing
The highest reported compensation on the 2024 filing was $613K, to Peter Crane (President). 2 officers or directors reported compensation on that filing.
Contact
Mailing address: 1776 Loughborough Lane, Upperville, VA 20184
Phone: (540) 592-3159
Website: https://www.osgf.org
Frequently asked questions about Oak Spring Garden Foundation
How much does Oak Spring Garden Foundation give each year?
Oak Spring Garden Foundation gave $193K across 80 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $137K across 83 grants.
What is Oak Spring Garden Foundation's typical grant size?
Oak Spring Garden Foundation's median grant in 2024 was $1,600, and its average grant was $2,418, across 80 grants on its 2024 IRS Form 990-PF.
Where does Oak Spring Garden Foundation give grants?
Oak Spring Garden Foundation's top state is California, with 10% of the grant dollars itemized on its 2024 IRS Form 990-PF. The next largest states were New Hampshire (10%) and Illinois (9%).
Does Oak Spring Garden Foundation give general operating support?
Not in 2024: none of the 80 grants with a stated purpose on Oak Spring Garden Foundation's 2024 IRS Form 990-PF were described as general or operating support. Recurring purposes include "2024 Interdisciplinary Residency" (27 grants), "2024 Perennial Residency Program" (14 grants) and "2024 Winter Perennial Residency Session" (9 grants).
Who are Oak Spring Garden Foundation's largest grantees?
Oak Spring Garden Foundation's largest 2024 grantees include Juliane Shibata Arts LLC ($2,000), Stephanie Sin-Yun Shih DBA Thisissh ($2,000) and Richard Vanderplas DBA Edenopolis L ($1,600), according to its 2024 IRS Form 990-PF. It also paid 75 grants to individuals ($187,175), which are not listed by name. Together they received 3% of its itemized 2024 grant dollars.
How large is Oak Spring Garden Foundation?
Oak Spring Garden Foundation reported $312.3M in total assets on its 2024 IRS Form 990-PF. Its revenue that year was $27.8M.
What does Oak Spring Garden Foundation fund?
OSGF’s mission is to perpetuate and share Bunny Mellon’s gifts in the public interest, and to inspire and facilitate scholarship and public dialogue on the history and future of plants. See mission & focus areas ↑
How do I apply for a grant from Oak Spring Garden Foundation?
OSGF states that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Oak Spring Garden Foundation's EIN?
Oak Spring Garden Foundation's EIN (Employer Identification Number) is 54-1672141. IRS Form 990 filing data is available on this page for 2020–2024.
Does Oak Spring Garden Foundation accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated September 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
Here's the math on researching Oak Spring Garden Foundation by hand.
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