A Public-Private Partnership

The City of Madison Parks Division and nonprofit Olbrich Botanical Society work together to support and operate the Gardens. This longstanding partnership has played a key role in allowing the Gardens to grow and flourish over the years.

Governed by a volunteer Board of Directors, the Society is a registered 501(c)(3) nonprofit that supports the Gardens through fundraising, programming, education, and a membership program over 8,000 households strong. OBS raises almost $2 million each year to keep the Gardens free and accessible to over 340,000 annual visitors.

Olbrich Botanical Society's Federal Tax ID/EIN is 39-1357247.

2024 Board of Directors


Alnisa Allgood

Vice President
Susan Goodwin

Bethany Ordaz

Laura Peterson

Past President
Philip Bradbury


Julie Bernauer

Matt Cornwell

Caren Lewis

Mike Maddox

John Manzer

Maureen Martin

Michele Miller Hayes

Bill Patek

Juscha E.M. Robinson

Sandra H. Statz

Advisors to the Board

Jt Covelli

Kevin Hess

Mary Phillips

Ex Officio Directors

Betty Chewning
SASY Neighborhood Association Representative

Liz Dannenbaum
District 15 Alder Designee

Moira Harrington
Madison Board of Park Commissioners Representative

Eric Knepp
Madison Parks Superintendent

Laurel Neverdahl
Olbrich Garden Club President

Tanya Zastrow
Olbrich Botanical Gardens Director

2024 Foundation Board of Directors


Sandy Dolister

Vice President
Timothy W. Sherry

Dennis Birke


Ann Casey

Jeff Levy

Dan Matson

Ex Officio Directors

Alnisa Allgood
OBS President

Laura Peterson
OBS Treasurer

Philip Bradbury
OBS Past President

Tanya Zastrow
Olbrich Botanical Gardens Director

Inclusion Statement

Olbrich Botanical Gardens aspires to be a destination where all visitors, volunteers, and staff are valued and feel they belong. With conscious intent and continuous learning, Olbrich Botanical Gardens' staff, volunteers, and board will address barriers to inclusion through education, operational changes, and partnerships with the community.

Guidestar Exchange Seal Recipient

The Olbrich Botanical Society received the GuideStar Exchange Seal, a leading symbol of transparency and accountability provided by GuideStar USA, Inc., the premier source of nonprofit information. The Seal demonstrates to Olbrich Botanical Society's vast support-base the deep commitment our organization has in nonprofit transparency and accountability.

In order to be awarded the GuideStar Exchange Seal, the Olbrich Botanical Society had to fill out every required field of our report page on www.guidestar.org, including our annual report, photos, videos, etc. Visit www.guidestar.org and search for "Olbrich Botanical Society" to view our report page.

Olbrich Botanical Society Privacy Policy

Olbrich Botanical Society (OBS) is committed to protecting your privacy. OBS will not sell or share your personal information with a third party, and uses information submitted solely for OBS purposes. Your name may appear in Olbrich Botanical Society's annual report if you make a donation, but will not be linked with personal information. Please e-mail olbrichinformation@cityofmadison.com to change your name to 'anonymous' in Olbrich Botanical Society's annual report.