
What we’re about
Want to learn more about Marin native plants? Join us for field trips, lectures, and work parties. Most of our events are free to our members and to the public. For more information, check out our website and subscribe to our newsletter.
For over 50 years, we have been dedicated to the conservation of California native plants and their natural habitats, and to increasing the understanding, appreciation, and horticultural use of native plants. Annual membership donations to the California Native Plant Society (CNPS) support our programs and conservation work. Additional benefits include our quarterly magazine Flora, our twice-yearly scientific journal Artemisia, and discounts at local nurseries.
Please:
- New: CNPS Marin Waiver for 2026
- Sign the Waiver for Marin Chapter 2025, if you have not done so already.
- Practice clean trail etiquette. Pocket Guide – Every Step Counts and Cleanliness Tips for Hikers
- Treat everyone with respect.
- No dogs at these events.
Upcoming events
2

Tilden Botanical Garden Tour
East Bay Regional Parks Botanic Garden, Wildcat Canyon Road at South Park Drive, Berkeley, CA, USA Mid-Winter Stroll through Tilden Park’s Botanic Garden
Wednesday, January 28, 2026 10 am to 2 pm
Leaders: Anna Gil and Kurt Rademacher
While many of the world’s plants basically “close shop” during winter, for those which evolved to thrive in California’s “Mediterranean” climate with its mild winters and long, hot, rainless summers, the early winter rains signal a spring-like resurrection! Long patient seeds germinate, ferns unfurl, and the mossy tree trunks and iconic yellow hillsides soon erupt into emerald green.
Join us for an intriguing walk through the Regional Parks Botanic Garden tucked into a valley in the Berkeley Hills. This is a “living museum” of California’s varied plant communities, from deserts and alpine meadows to chaparral and coastal rainforests. We will explore how various plants adapt to their unique habitats and seasons: their structures and ‘tricks’ to both thrive and survive the exuberant and the dormant times.
For now, winter uncloaks a surprising palette of variously colored seeds, twigs, and buds in reds, purples, yellows and greens on leafless plants like the various willows, maples and dogwoods. The garden’s scores of Manzanita species are in full, if dainty, bloom, as are some other early bloomers like the anxious milk maids and the secretive fetid adder’s tongue. Don’t expect to see anything abloom in the Sierran meadow section, though we will learn what their alpine colleagues are doing beneath their current snowpack.
Come prepared for a cold-weather walk on potentially wet trails and stony stairways for this peek into the winter world of our native plants. This walk will be about one mile long.
Directions: East Bay Regional Parks Botanic Garden, Tilden Park, via Shasta Road approach, Berkeley. Intersection of Wildcat Canyon Road and South Park Road.
Carpool Options: From Marin County, Meet at 9 am, leave by 9:15 to reach garden by 10:00. Meet near the corner of Larkspur Landing Circle and SF Drake Blvd. (east end of the shopping center near Design Within Reach). Riders will park on SF Drake Blvd. headed west, not in the shopping center lot.
https://maps.app.goo.gl/V4PAJ2viUwbdGVaZ6
Bring: Water, a snack/lunch. Dress in layers. A hiking pole and sturdy shoes are advised, as surfaces can be uneven. Rain cancels.
Email Ann with any questions: annonfire@gmail.com Text for day-of-trip questions or issues: 530-521-4402
Please:
- New Year, new waiver. Please sign the CNPS Marin 2026 Waiver
- Practice clean trail etiquette. Pocket Guide – Every Step Counts and Cleanliness Tips for Hikers
- No dogs on this trip.
14 attendees
Fern ID Field Trip
Pantoll Ranger Station, 801 Panoramic Highway, Mill Valley, Ca 94941 · < 1 mi, Mill Valley, CA, USMt. Tamalpais Fern ID Field Trip
Thursday, February 12, 2026
10 am to 2 pm
Leaders: Kurt Rademacher & David Edelson
In our deep winter when most of Mt. Tamalpais’ wildflowers are dormant or non-existent, the ancient ferns are in their glory, unfurling on shady creekbanks and sunny cliff faces. Ever find the diversity of these feathery fronds confusing? Want to be able to distinguish a lady fern from a coastal wood fern, or the leather fern from a bird's foot fern? How about a 6-foot giant chain fern from a 2-inch lip fern?! Come join us for an exploration of about a dozen different species, their intriguing life cycles, extreme habitat preferences, and how to identify them. This will involve some close looking and attention to detail, so please bring a 4-power or stronger hand lens if you have one.
Gathering at Pan Toll, we plan to hike about two miles, introducing fern anatomy and biology on some common species, and then on to less common cliff brakes and lip ferns. Driving on to nearby Rock Springs (free parking), we will search for other denizens of woodlands and serpentine outcrops.
Directions: Meet us at the Pan Toll Campground parking lot on Panorama Highway, about 30 minutes from Highway 101 exits in Mill Valley, or 5 minutes up from Stinson Beach. State Park parking fee is $8 cash or check or check out a State Parks pass from your local library. There are restrooms at both Pan Toll and Rock Springs.
Bring: Water, a snack/lunch. Hiking pole is suggested, as trails are steep and rocky at some places. Dress in layers, mittens, and bring rain-gear, as weather on the mountain can change quickly.
Rain cancels. Check Meetup for notification.
If you have not done so already, please sign the CNPS Marin 2026 Waiver
Practice clean trail etiquette. Pocket Guide - Every Step Counts and Cleanliness Tips for Hikers
Email Ann with any questions: annonfire@gmail.com Text for day-of-trip questions or issues: 530-521-4402
Attendee limit: 2020 attendees
Past events
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