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Oak Spring Garden Foundation

Private foundation · Grantmaker Upperville, VA EIN: 54-1672141 Website

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.

Research compiled by Grantable AI from public sources. Last updated September 2026.

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

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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

38states

Share of 2024 grant dollars across all 80 itemized grants.

Cities

WashingtonBrooklynUppervilleBloomingtonDallasForest HillMissoulaNew YorkWarrentonAlbuquerqueAnnandaleAustinBaltimoreBlacksburgBostonCharlottsvilleChicagoColumbusCshiersDayton

Giving Over Time

Total grant dollars and number of grants per year

$0$50K$100K$150K$200K24 grants2020 35 grants2021 57 grants2022 83 grants2023 80 grants2024

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

Juliane Shibata Arts LLC: $2KJuliane Shibata Arts LLC$2KStephanie Sin-Yun Shih DBA Thisissh: $2KStephanie Sin-Yun Shih DBAThisissh$2KRichard Vanderplas DBA Edenopolis L: $2KRichard Vanderplas DBAEdenopolis L$2KSmithsonian Institution-Nhap: $500Smithsonian Institution-Nhap$500Love Revival Church: $150Love Revival Church$150

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

279<$50K$50–100K$100–250K$250–500K$500K–1M$1–5M$5M+

The most common grant size was under $50K: 279 grants of 279 (100%).

Giving History

Grant recipients and amounts by year

RecipientPurposeAmount
47 grants to individuals Recipients not named —$164,575
Juliane Shibata Arts LLC Northfield, MN2024 Interdisciplinary Residency$2,000
Stephanie Sin-Yun Shih DBA Thisissh Los Angeles, CA2024 Interdisciplinary Residency$2,000
Richard Vanderplas DBA Edenopolis L New York, NYCulinary 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)
Revenue
Expenses
Qualifying Distributions
Net Investment Income
$0$10M$20M$30M$40M2020 2021 2022 2023 2024
Metric202420232022
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

  1. 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

Peter Crane — President: $613KPeter CranePresident$613KStephanie Murdaugh — Treasurer: $116KStephanie MurdaughTreasurer$116K

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.

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