Classes, Field Trips & Workshops

Miniature of Goldback Fern © Linda Ann Vorobik

Miniature of Goldback Fern
© Linda Ann Vorobik

Our schedule of fun and informative classes, field trips, and workshops offers something for every native plant lover. Choose from our changing selection of classes on botany and natural history, field trips to wild California, and hands-on workshops on gardening, art, and photography

To enroll, print out the Class Registration Form and send it with your check made out to The Regional Parks Foundation to:

Regional Parks Foundation
c/o Linda Blide
3249 Monterey Blvd.
Oakland, CA 94602-3561

For additional information email Linda Blide at

(Advance registration is required for all classes. Drop ins are not permitted.)

Download Registration Form  

Trips – until November 2017


Instructors Bios

Susan Ashley taught Plant Propagation at Merritt College, Diablo Valley College, The Master Gardener’s Program of Alameda County, and for the Friends of RPBG. She runs a small backyard nursery specializing in California native plants.

Heath Bartosh is co‐founder and Senior Botanist of Nomad Ecology, based in Martinez, and a Research Associate at the University and Jepson Herbaria at Cal Berkeley. Mr. Bartosh is considered an expert in the flora of the East Bay flora (Contra Costa and Alameda counties) and has conducted extensive botanical fieldwork throughout California, focusing on distribution, soil and geologic relationships, endemism, regional and local rarity, and habitat conversion. In 2009 he became a member of the Rare Plant Program Committee at the state level of CNPS.

Kathy Biggs has been a nature lover all her life. Not a scientist but rather an enthusiast, she is the author of Calif’s first dragonfly guide, the Southwest’s first dragonfly guide and an educational coloring book. Her lively presentations are filled with gorgeous photos taken by her husband Dave Biggs and others.

Bob Case is a retired College biology instructor who frequently gives lectures to local groups and the California Native Plant Society on plants and plant photography. He is on the board of the Friends of the RP Botanic Garden and has been part of the Wayne Roderick lecture series at the garden.

Katherine Greenberg is garden designer and author, was the founding president of the Friends of the Regional Parks Botanic Garden and a past president of the Mediterranean Garden Society and Pacific Horticulture Society. She is currently on the Advisory Board of the UC Botanical Garden. Her Lafayette garden has been featured in a number of publications.

Nick Jensen is currently a Ph.D candidate in botany at Rancho Santa Ana Botanic Garden/Claremont Graduate University. His research interests include biogeography, rare plant conservation, and biodiversity. His research projects include the flora of Tejon Ranch, threats to California’s rare plants, and evolutionary relationships in Streptanthus (jewelflowers). Nick has a B.S. in Environmental Horticulture from U.C. Davis and previously served as the Rare Plant Program Director for the California Native Plant Society. He has also worked as a botanist for the US Forest Service, Chicago Botanic Garden, and the private consulting industry.

Glenn Keator is a popular freelance instructor of botany in the Bay Area. He currently teaches, leads field trips, and provides docent instruction in botany for the Regional Parks Botanic Garden. He is the author of a number of books on native plants.

Dick O’Donnell has studied and written about serpentine endemism for over 10 years. By observing the plant and animal life in serpentine habitats for hundreds of hours every year, he has become familiar with the variety of substrates that are called serpentine and examined their similarities, differences and their differential effect on plants. He has published several articles about serpentine endemism in the Garden’s annual journal The Four Seasons and published two new species, both of which are serpentine endemics, in Madrono: Streptanthus vernalis ODonnell and Dolan, and Hesperolinon sharsmithiae ODonnell. A third new serpentine endemic species is in the works.

Kristin Meuser has been painting the land for over 35 years. She has studied nature journaling with Jack Laws, watercolor with Andie Thrams and writing with Sarah Rabkin. She has taught at the Pt Reyes Field Institute, the Sierra Nevada Field Campus, The Laguna de Santa Rosa and other venues throughout California.

Linda Ann Vorobik was Principal Illustrator for The Jepson Manual, flora of California, has a PhD in Systematic Botany, and has been instruction and doing commission line drawings and watercolors for the last 30 years. For more information, see

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