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California · Private foundation

Hillsborough Garden Club Trust

Its FY2026 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$55k
Granted FY2026(still arriving)
13
Grants FY2026
13
Organizations funded FY2025
15%
First-time grantees FY2025
Read the full brief
Median grant, FY2026
$500
Largest grant, FY2026
$27,500
Organizations funded a year
13 to 21
FY2019 to FY2025
States reached, FY2026
2
Total assets, FY2026
$404k
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2025, 15% of the organizations Hillsborough Garden Club Trust funded were first-time grantees, receiving 26% of its grant dollars.

New vs renewed · share of each year

In FY2025, 74% of grant dollars renewed an existing relationship; $5k went to new ones.

50%100%’19’20’21’22’23’24’25
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’19’20’21’22’23’24’25
EnvironmentFood & NutritionEmploymentAnimalsCommunity ImprovementOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2026still arriving13$55k8%
FY202513$19k15%
FY202415$19k7%
FY202315$12k27%
FY202215$52k27%
FY202118$16k17%
FY202016$20k31%
FY201921$30k19%
100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Environment$171kFood & Nutrition$21kEducation$6kHealth$6kScience & Tech$5kRecreation & Sports$4kAnimals$2kArts & Culture$900

Top grantees

Largest recipients by total granted, FY2017 to FY2026, and the share of each one’s budget the grants supplied at peak.

Show all 30 grantees

What it could do for these grantees

Plus 21 recipients with no EIN on record ($67k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget Hillsborough Garden Club Trust supplied at peak.

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetPeninsula Open Space Trust: $71,600 over 8y, 0.2% of budgetHillsborough Garden Club: $51,990 over 6y, 24% of budgetThe Garden Club of America: $14,999 over 3y, 0.1% of budgetPollinator Partnership: $9,200 over 9y, 0.5% of budgetSave The Bay: $5,900 over 5y, 0.1% of budgetCuriodyssey: $5,150 over 8y, 0.1% of budgetRandom Acts of Flowers: $5,000 over 1y, 0.1% of budgetCall Primrose: $4,500 over 1y, 0.4% of budgetSave the Redwoods League: $4,450 over 9y, 0.0% of budgetHillsborough Beautification Foundation: $4,350 over 6y, 0.7% of budgetSanta Rosa Parks Foundation: $3,350 over 2y, 0.6% of budgetSan Francisco Botanical Garden Society at Strybing Arboretum: $3,200 over 5y, 0.0% of budgetThe Heal Project: $3,000 over 1y, 0.5% of budgetVida Verde Nature Education: $3,000 over 1y, 0.2% of budgetPie Ranch: $2,500 over 1y, 0.1% of budgetSan Mateo Arboretum Society Inc: $2,100 over 9y, 0.7% of budgetCalifornia Native Plant Society: $1,950 over 10y, 0.0% of budgetBurlingame Intermediate School PTA California Congress of Parents: $1,500 over 1y, 2.5% of budgetVillage Harvest Corporation: $800 over 6y, 0.1% of budgetCalifornia State Parks Foundation: $600 over 5y, 0.0% of budgetCalifornia Wildlife Foundation: $500 over 3y, 0.0% of budgetLandscape Architecture Foundation: $500 over 1y, 0.1% of budgetMuttville: $500 over 1y, 0.0% of budgetThe Student Conservation Association Inc: $100 over 1y, 0.0% of budgetWaddell Creek Association: $100 over 1y, 0.3% of budgetAmerican Forests: $100 over 1y, 0.0% of budgetEnvironmental Defense Fund Incorporated: $100 over 1y, 0.0% of budgetThe Marine Mammal Center: $100 over 1y, 0.0% of budget

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 28.

Nonprofits that may fit its grantmaking

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.

Gordon E and Betty I Moore FoundationCA21.2× affinity8 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Gordon E and Betty I Moore Foundation · Silicon Valley Community Foundation · Marin Community Foundation · Atkinson Foundation · Bothin Foundation · The David and Lucile Packard Foundation · Jewish Community Federation of San Francisco the Peninsula Marin & Sonoma · The San Francisco Foundation · Tomkat Ranch Educational Foundation · Sand Hill Foundation · Clif Family Foundation · Morgan Stanley Global Impact Funding Trust Inc

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

Compare Hillsborough Garden Club Trust with peer funders

Warm introductions · Powered by PlinthPlus

How do I get to Hillsborough Garden Club Trust?

Find your warmest path to Hillsborough Garden Club Trust through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.

Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.

About Hillsborough Garden Club Trust

How much does Hillsborough Garden Club Trust give?
Hillsborough Garden Club Trust reported 13 grants totaling $54,500 in its FY2026 IRS filing. It funded between 13 and 21 organizations a year over FY2019 to FY2025.
What does Hillsborough Garden Club Trust fund?
By grant dollars over FY2017 to FY2026, its largest causes are Environment (79%), Food & Nutrition (10%), Education (3%).
Who are Hillsborough Garden Club Trust's largest grantees?
By total granted over FY2017 to FY2026: Peninsula Open Space Trust ($72k), Hillsborough Garden Club ($52k), The Garden Club of America ($15k).
Does Hillsborough Garden Club Trust fund new organizations?
In FY2025, 15% of the organizations it funded were first-time grantees.
Does Hillsborough Garden Club Trust accept unsolicited applications?
Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
Which funders back the same organizations as Hillsborough Garden Club Trust?
Its strongest co-funders, measured against what their size predicts, include Gordon E and Betty I Moore Foundation, Silicon Valley Community Foundation, Marin Community Foundation.
Where is Hillsborough Garden Club Trust based?
Hillsborough Garden Club Trust is based in CA.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 51 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2026, released 2026. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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