About us
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
6
Roy’s Redwoods Planting Days
Roys Redwood Preserve, Nicasio Valley Road, Woodacre, CA, USRoy’s Redwoods Planting Days
Tuesdays in February, (2/3; 2/10; 2/17; 2/24), 1pm-3pm
Leader: Aja Wylder, Marin County Parks Nursery Manager
CNPS Marin Coordinator: Caroline Christman
Location: Roy’s Redwoods Preserve, San Geronimo ValleyRoy’s Redwoods has long been a favorite spot for a ramble through a shady redwood grove. However, lack of a formal trail system led to the forest understory being trampled and natural drainage processes being altered. Over the last few years, the Marin County Open Space District and One Tam worked together to complete a project to restore forest and floodplain. The project also created a series of trails that allows visitors of all abilities to experience the beauty of the redwoods. Join us to plant native redwood understory species and be part of this exciting restoration!
Learn more about Roy’s Redwoods Restoration.
Volunteers should wear sturdy, closed-toed shoes and clothing layers they don't mind getting dirty. Please bring sun protection, a water bottle, and layers, as it can be cold beneath the redwoods. Gloves and tools will be provided. No prior experience is required.
Heavy rain cancels; cancellations will be posted on Meetup.
Directions: Meet at the entrance to Roy’s Redwoods Preserve on Nicasio Valley Road. Parking is available along the road. https://maps.app.goo.gl/Ls8wXQpPqQhDkr6v5
Limit: 10 Attendees
Please:
- Sign the Waiver for Marin Chapter 2026, if you have not done so already.
- Practice clean trail etiquette. Pocket Guide – Every Step Counts and Cleanliness Tips for Hikers
- Sorry, no dogs on this trip.
5 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 EdelsonIn 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: 20
20 attendeesRoy’s Redwoods Planting Days
Roys Redwood Preserve, Nicasio Valley Road, Woodacre, CA, USRoy’s Redwoods Planting Days
Tuesdays in February, (2/3; 2/10; 2/17; 2/24), 1pm-3pm
Leader: Aja Wylder, Marin County Parks Nursery Manager
CNPS Marin Coordinator: Caroline Christman
Location: Roy’s Redwoods Preserve, San Geronimo ValleyRoy’s Redwoods has long been a favorite spot for a ramble through a shady redwood grove. However, lack of a formal trail system led to the forest understory being trampled and natural drainage processes being altered. Over the last few years, the Marin County Open Space District and One Tam worked together to complete a project to restore forest and floodplain. The project also created a series of trails that allows visitors of all abilities to experience the beauty of the redwoods. Join us to plant native redwood understory species and be part of this exciting restoration!
Learn more about Roy’s Redwoods Restoration.
Volunteers should wear sturdy, closed-toed shoes and clothing layers they don't mind getting dirty. Please bring sun protection, a water bottle, and layers, as it can be cold beneath the redwoods. Gloves and tools will be provided. No prior experience is required.
Heavy rain cancels; cancellations will be posted on Meetup.
Directions: Meet at the entrance to Roy’s Redwoods Preserve on Nicasio Valley Road. Parking is available along the road. https://maps.app.goo.gl/Ls8wXQpPqQhDkr6v5
Limit: 10 Attendees
Please:
- Sign the Waiver for Marin Chapter 2026, if you have not done so already.
- Practice clean trail etiquette. Pocket Guide – Every Step Counts and Cleanliness Tips for Hikers
- Sorry, no dogs on this trip.
4 attendees
Past events
188
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