· Private foundation
The Mezitt Horticultural Foundation
Its FY2025 filing reports that it accepted unsolicited grant applications.
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.
Where the money goes
Grants by size, and the largest recipients.
| Recipient | Amount |
|---|---|
| HORTICULTURAL RESEARCH INSTITUTE | $5,000 |
| MASSACHUSETTS HORTICULTURAL SOCIETY | $5,000 |
| NEW ENGLAND BOTANIC GARDEN AT TOWER HILL | $2,000 |
| CORNELL BOTANICAL GARDENS | $1,000 |
| FRIENDS OF BEDROCK GARDENS | $1,000 |
| NATIVE PLANT TRUST | $1,000 |
| GROW NATIVE MASSACHUSETTS | $1,000 |
| IPPS ER FOUNDATION | $1,000 |
| HARVARD UNIVERSITY - ARNOLD ARBORETUM | $1,000 |
| FRIENDS OF MOUNT AUBURN CEMETARY | $1,000 |
| FUTURE FARMERS AMERICA FOUNDATION | $1,000 |
| MNLA FOUNDATION FOR EDUCATIONAL EXCELLENCE | $1,000 |
| RHODODENDRON SOCIETY MA CHAPTER | $1,000 |
| TRUSTEES OF RESERVATION | $1,000 |
| HERITAGE GARDENS | $600 |
Does the money reach high-need areas?
Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.
Dollar for dollar, its grants (FY17–25) land where the poverty rate runs at 9%, against an area that typically sits at 8%. 43% of its dollars go to grantees based in above-average-need neighborhoods. Its grants spread fairly evenly across need levels.
How this is measured
How this is measured
Who it funds again
Organizations funded in more than one year, against those funded once.
15 repeat relationships: 10 still active in FY2025, 5 since wound down; 5 grantees were first funded in FY2025 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Still filing today
New vs renewed · share of each year
In FY2025, 59% of grant dollars renewed an existing relationship; $10k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
- HRHORTICULTURAL RESEARCH INSTITUTE INC9× · 2017–2025 · $17k · revenue +150%
- FOFRIENDS OF MOUNT AUBURN CEMETERY9× · 2017–2025 · $9k · revenue +56%
- FOFRIENDS OF BEDROCK GARDENS9× · 2017–2025 · $6k · revenue +101%
Funded once
- HSHOPKINTON SUSTAINABLE GREEN COMMITTEEone grant, 2024 · $2k
- ARAMERICAN RHODODENDRON SOCIETYone grant, 2018 · $2k
- MFMASSACHUSETTS FFA ASSOCIATIONone grant, 2024 · $1k
How this is measured
Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.
Closest unfunded matches
The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.
The new york botanical garden is a museum of plants and a scientific research center devoted to the study of plants and their uses. it is the garden's mission to improve public understanding of the natural world, horticulture, and the…
The mission of the jenkins arboretum & gardens is to preserve natural, tranquil woodlands for community enjoyment, to showcase native plants and a world class collection of rhododendrons and azaleas, and to promote environmental…
To support charitable, plant-based scientific, and educational activities exclusively for the benefit of the minnesota landscape arboretum of the university of minnesota
New england botanic garden at tower hill creates experiences with plants that inspire people and improve the world.
To cultivate and develop an expansive collection of trees, gardens, and plants for all to explore, enjoy and study; and to provide through education and stewardship, a greener, healthier, more beautiful environment.
Our mission is to spark people's curiosity to explore, steward, and find peace and joy in nature. in service to this, norman bird sanctuary inspires, builds, and engages a community of stewards who preserve, protect, enjoy, and learn from…
We harness the power of plants for humankind and share the joy and beauty of tropical gardening with everyone. fairchild tropical botanic garden is a museum of tropical plants within a world famous, 83-acre designed landscape. it was…
To protect the nature of massachusetts for people and for wildlife through education, land conservation, advocacy, scientific research, and habitat stewardship/restoration.
The mission of the mount desert land & garden preserve is to conserve and share the beauty of our historic lands and gardens.
Assisting member clubs with education and appreciation of horticulture, landscape and floral design, gardening and environmental concerns through workshops and schools.
How this is measured
11 grantees tracked through their own filings, 2017–2025.
Each grant beside the grantee’s revenue from every source, year by year.
How this is measured
Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 11 of the 25 grantees resolved in that span have returns of their own we could reconcile.
Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.
Where the money sits, by cause and then by grantee
Each grantee by its size and the funder’s share of it; top left is load-bearing
Grantee by grantee: a decade per organization, before and after funding
A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.
- Who funds HORTICULTURAL RESEARCH INSTITUTE INC ↗
- Who funds FRIENDS OF MOUNT AUBURN CEMETERY ↗
- Who funds FRIENDS OF BEDROCK GARDENS ↗
- Who funds GROW NATIVE MASSACHUSETTS INC ↗
- Who funds MASSACHUSETTS HORTICULTURAL SOCIETY ↗
- Who funds MNLA FOUNDATION FOR EDUCATIONAL EXCELLENCE INC ↗
- Who funds NATIVE PLANT TRUST INC ↗
- Who funds THE TRUSTEES OF RESERVATIONS ↗
- Who funds MASSACHUSETTS AGRICULTURE IN THE CLASSROOM INC ↗
- Who funds EMMANUEL COLLEGE ↗
- Who funds ISABELLA STEWART GARDNER MUSEUM INC ↗
Co-funders
Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.
Open a dossier: Boston Foundation Inc · Vanguard Charitable Endowment Program · Fidelity Investments Charitable Gift Fund
How this is measured
How much its grantees rely on government
Each dot is one organization The Mezitt Horticultural Foundation funds: left to right is the share of its income from government, bottom to top the share from The Mezitt Horticultural Foundation. Bigger dots raise more.
- Native Plant Trust Inc: 3% of income from government
- Grow Native Massachusetts Inc: 3% of income from government
- The Trustees of Reservations: 2% of income from government
- Friends of Mount Auburn Cemetery: 1% of income from government
- Emmanuel College: 0% of income from government
How this is measured
Play a game based on Mezitt Horticultural’s filings →