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California Native Plant Society

The California Native Plant Society (CNPS) was formed in 1965 in the East Bay region. Today it is a statewide organization with thirty-three chapters. The East Bay Chapter covers Alameda and Contra Costa Counties. The state organization and the local chapters work together to increase understanding of California's native flora and to preserve this rich resource for future generations.

The flower in the banner at top is that of Grindelia hirsutula. Photo by Janice Bray

Photographs of native plants and related activity

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Calendar of Chapter Events

Field Trips

Kennedy Grove Regional Recreation Area, El Sobrante, CA, Wed, July 2, 5:30pm – 7:30pmSPAWNERS is excited to announce that EBMUD biologists Jonathan Price and Bert Mulchaey, and ranger/naturalist Joe Scornaienchi will lead us on a special hike to the Scow Canyon restoration site. The site was created as mitigation for the San Pablo Dam Seismic Upgrade Project. We will learn about the wildlife that…


Membership Meetings Membership meetings will be on summer recess for the months of June, July, and August. But mark your calendars now and watch the Bay Leaf for the announcement of a great program when we resume or regular meetings in September.Wednesday, September 24, 7:30 pm, OrindaHeath Bartosh and Chris Thayer—Imperiled East Bay Ecosystem: The Oakley Sand Mounds.

Native Here News

  Farewell from Margot December is my last month working at Native Here Nursery. Thank you to all our customers and volunteers I’ve met and worked with over my 13 plus years volunteering and working at Native Here. I’ve learned a lot from all of you. I have always been amazed at the plant diversity just within our two-county area. Learning about plants I had not known about before and learning…


Contra Costa Restoration Opportunities: In an effort to offer our Contra Costa members more opportunities to participate in the work of CNPS, three EB-CNPS board members who lead or assist with restoration efforts in Contra Costa County are inviting CNPS members to volunteer with their projects. Come join us to learn about our native plants, hear about local environmental issues, meet new…
Conservation Blog
June 5th
On June 3rd, the Dublin City Council unanimously voted to adopt the Dublin Open Space Initiative! This initiative, created by Dublin Citizens with the help of local environmental organizations including EBCNPS, creates a permanent urban limit line at the …
May 22nd
On May 12th, EBCNPS submitted a letter in response to the Final Environmental Impact Report for the Richmond Bay Campus Long Range Development Plan proposed for the Richmond Field Station. Our letter cited inadequate protection for several areas of the si…
May 15th

Click here for the June 2014 issue of the East Bay Chapter newsletter, the Bay Leaf, in html format.

Conservation Analyst Fund

We have met our goal of $40,000 to support our Conservation Analyst, Mack Casterman for 2014.   It is very gratifying to the Board and the Conservation Committee to receive the support of so many members and friends of our Chapter. Thanks to all who have helped us!

Donations are always welcome as we go forward. The need to conserve land with high native plant value is as pressing as ever. Strong financial support will give us more choices in how we proceed. Click on the Paypal button below or send a check to the Chapter’s address (P.O. Box 5597, Elmwood Station, Berkeley, CA 94705).   All contributions are tax- deductible.

Guidebook to the Botanical Priority Protection Areas of the East Bay is now available online.  Click here to access this marvelous resource, which includes a beautiful interactive map.

Save Knowland Park


A bird’s eye view of the Oakland Zoo’s proposed expansion site at Knowland Park – note the rare maritime chaparral in the right side of the picture. Photo copyright, Steve Whittaker

Your help is needed to save Oakland’s largest city park – Knowland Park – from an unnecessary and destructive zoo expansion project! Despite pleas by a wide range of conservation groups to modify their project, Oakland Zoo executives have pushed forward with plans to bulldoze and build on rare wildlife and plant habitat, putting in danger threatened species like the Alameda Whipsnake, and the wide variety of wildlife that call Knowland Park home. Knowland Park is a critical piece of EBCNPS’s “Foothills of South Oakland” Botanical Priority Protection Area due to its acres of remnant native grasslands as well as a stand of rare maritime chaparral. Both habitats will be heavily impacted by the Zoo’s proposed development plan.To follow along with our work to save Knowland Park, please “like” us on Facebook and share this info with your firends and neighbors. You can also visit the Knowland Park Coalition website at saveknowland.org for up to date reporting on the ongoing efforts to gain permanent protection for this wonderful park. Knowland Park has been referred to as Oakland’s best kept secret, but we are hopeful that with your help it won’t stay a secret much longer.

Click on the button below to make a donation to Save Knowland Park.

Rescue Tesla Park's natural treasures




Buttercups (Ranunculus californicus) in Tesla Park.  Photo by Mack Casterman.

Friends of Tesla Park

Visit the Friends of Tesla Park web site, to learn more about the Friends' efforts to prevent  destruction of 3,400 acres of eastern Alameda County native habitat, and to get involved. 

As a Friend, EBCNPS supports establishing Tesla Park as a non-motorized low impact historic  and natural resource park and preserve. [read more]




For twenty years amateurs and professionals concerned with the East Bay flora have found Barbara Ertter’s Annotated Checklist of the East Bay Flora an indispensable resource. Now Dr. Ertter and restoration ecologist, botanist and photographer Lech Naumovich have produced a second edition incorporating a wealth of new information. The book is available at Native Here Nursery and at the East Bay Chapter membership programs.  It may be ordered from Delia Taylor, deliataylor@me.com.  You may also order the book online by clicking on the Paypal button labeled "Buy Now" and following the instructions. 



The East Bay Chapter of CNPS wants to keep track of rare and endemic native plants and plant communities in the East Bay. Within our catalogue of native plant species there is an abundance of rarity: from Mount Diablo endemics to Pleistocene relicts; narrowly distributed taxa to peripheral populations; and species that have suffered extirpations from changes in vegetation composition resulting from the introduction of non-native plant species or directly from human development. Based on the CNPS Inventory of Rare, Threatened, and Endangered Plants of California, a total of 127 of these plant species are currently known from our Chapter area. These species are separated into five categories of rarity:

[Read more about the EBCNPS Rare Plant Program referred to in the poster above.]


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