Olbrich Botanical Society Inc
Olbrich botanical gardens enriches lives and inspires people to live in harmony with the natural world. Olbrich botanical gardens is dedicated to the creation, conservation, and interpretation of gardens and plant collections hardy to the American midwest or native to the world's tropical forests for study, enjoyment, and public benefit. The public-private partnership of Olbrich Botanical Society and the city of madison parks division makes the mission possible.
Olbrich Botanical Society Inc at a glance
In short: Olbrich Botanical Society Inc gave $546K across 1 grant in 2024 (avg $546K), mostly in Wisconsin. Source: 2024 IRS Form 990.
- Annual giving (2024)
- $545,575
- +6719.7% vs 2023
- Grants made (2024)
- 1
- +0.0% vs 2023
- Average grant
- $545,575
- +6719.7% vs 2023
- Median grant
- $545,575
- Total assets
- $5,987,239
- +16.9% vs 2023
- Primary geography
- Wisconsin (100% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990, 2024 View filing
Data from IRS Form 990, 2024; updated September 2026.
Who Olbrich Botanical Society Inc funds
How this funder distributes its grants
Top Recipients
Top recipient in 2024
The largest 2024 recipient was Olbrich Botanical Society Foundation Inc ($546K).
Grant Size Distribution
5 grants across all recorded years
The most common grant size was under $50K: 2 grants of 5 (40%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of the 2024 grant dollars on its one itemized grant.
States
Cities
How Olbrich Botanical Society Inc gives
- Giving grew 173% from 2021 to 2024. Method
From the foundation's IRS Form 990 filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2021 to 2024, annual grant giving ranged from $8K (2023) to $2.1M (2022). In 2024 it made 1 grant totaling $546K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Olbrich Botanical Society Foundation Inc Madison, WI | General Support | $545,575 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2024 | $5,987,239 | $3,667,076 | $3,419,089 | $545,575 | 1 | $173,716 |
| 2023 | $5,121,944 | $2,960,788 | $2,566,516 | $8,000 | 1 | $92,543 |
| 2022 | $4,637,187 | $3,136,331 | $4,699,529 | $2,147,232 | 2 | $56,332 |
| 2021 | $6,479,697 | $3,937,730 | $1,851,924 | $200,000 | 1 | $104,071 |
| 2020 | $4,509,280 | $1,967,623 | $1,571,237 | — | — | $42,780 |
About Olbrich Botanical Society Inc
Based on IRS filings
Olbrich Botanical Society Inc is a public charity focused on Environment & Animals, based in Madison, WI. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $6.0M in total assets. In 2024, it awarded 1 grant totaling $546K. Net investment income was $174K.
Focus Areas
Leadership & Key People
Officers and directors from IRS filings
Olbrich Botanical Society Inc is led by Tanya Zastrow, Executive Director on every filing since 2021; 1 of 16 officers listed in 2024 is compensated.
Officers on the 2024 filing
Tanya Zastrow
Executive Director
On filings since 2021
40 hrs/week
$13K (2021) → $109K (2024)
Alnisa Allgood
President
Director → Vice President, 2021
Vice President → President, 2023
On filings since 2020
1 hr/week
No compensation reported
Julie Bernauer
Director
On filings since 2021
1 hr/week
No compensation reported
Juscha Robinson
Director
On filings since 2021
1 hr/week
No compensation reported
Sandra H. Statz
Director
On filings since 2021
1 hr/week
No compensation reported
Bill Patek
Director
On filings since 2022
1 hr/week
No compensation reported
Matt Cornwell
Director
On filings since 2022
1 hr/week
No compensation reported
Caren Lewis
Director
New on the 2024 filing
1 hr/week
No compensation reported
John Manzer
Director
New on the 2024 filing
1 hr/week
No compensation reported
Maureen Martin
Director
New on the 2024 filing
1 hr/week
No compensation reported
Michele Miller Hayes
Director
New on the 2024 filing
1 hr/week
No compensation reported
Mike Maddox
Director
New on the 2024 filing
1 hr/week
No compensation reported
Laura Peterson
Treasurer
Director → Treasurer, 2022
On filings since 2020
1 hr/week
No compensation reported
Philip Bradbury
Past President
Vice President → President, 2021
President → Past President, 2023
On filings since 2020
1 hr/week
No compensation reported
Susan Goodwin
Vice President
Director → Vice President, 2023
On filings since 2020
1 hr/week
No compensation reported
Bethany Ordaz
Secretary
Director → Secretary, 2024
On filings since 2021
1 hr/week
No compensation reported
Former officers (17)
- Former: Betty Chewning (2020–2023) — Director & Executive Officio
- Former: Eric Knepp (2020–2023) — Director & Executive Officio
- Former: Julie Rupert (2020–2023) — Director
- Former: Laurel Neverdahl (2020–2023) — Director & Executive Officio
- Former: Liz Dannenbaum (2020–2023) — Director & Executive Officio
- Former: Moira Harrington (2020–2023) — Director & Executive Officio
- Former: Renee Boyce (2020–2023) — Director
- Former: Maurice Sheppard (2021–2023) — Secretary
- Former: William White (2020–2022) — Director
- Former: Timothy W. Sherry (2022) — Director
- Former: Brad Hinkfuss (2020–2021) — Director & Executive Officio
- Former: Mary Phillips (2020–2021) — Treasurer
- Former: Roberta Sladky (2020–2021) — Executive Director
- Former: Tim Sherry (2020–2021) — Director
- Former: Erik Lincoln (2020) — Director
- Former: Kevin Hess (2020) — Director
- Former: Richard Wagner (2020) — Director
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 $109K, to Tanya Zastrow (Executive Director).
Frequently asked questions about Olbrich Botanical Society Inc
How much does Olbrich Botanical Society Inc give each year?
Olbrich Botanical Society Inc gave $546K across 1 grant in 2024, according to its 2024 IRS Form 990. In 2023 it gave $8K across 1 grant.
How large is Olbrich Botanical Society Inc?
Olbrich Botanical Society Inc reported $6.0M in total assets on its 2024 IRS Form 990. Its revenue that year was $3.7M.
What is Olbrich Botanical Society Inc?
Olbrich Botanical Society Inc is a public charity focused on Environment & Animals, based in Madison, WI. It holds $6.0M in total assets as of 2024.
Where does Olbrich Botanical Society Inc operate?
Olbrich Botanical Society Inc has awarded grants in Wisconsin.
What is Olbrich Botanical Society Inc's EIN?
Olbrich Botanical Society Inc's EIN (Employer Identification Number) is 39-1357247. IRS Form 990 filing data is available on this page for 2020–2024.
Data last updated September 2026. Sourced from IRS Form 990 filings.
Data update history
(5)
When this profile's IRS filing data changed on Grantable
- Updated Form 990 for fiscal year 2021 (received by the IRS November 11, 2022)
- Updated Form 990 for fiscal year 2022 (received by the IRS November 7, 2023)
- Updated Form 990 for fiscal year 2023 (received by the IRS November 11, 2024)
- Updated Form 990 for fiscal year 2024 (received by the IRS November 4, 2025)
- IRS filings on file for fiscal years 2020–2024
Live grants for the work Olbrich Botanical Society Inc funds
Environment & Animals Open opportunities, soonest deadline first.
Explore Open Grants
Browse active grant opportunities in Olbrich Botanical Society Inc's focus areas in our free grants database
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