Vegetation Time Traveling!

New date: April 8, 2026 – A head cold turned to pneumonia! We will have to delay this trip again. We are so sorry.

This trip has to be postponed one week to Wednesday March 4, 2026 due to a head cold!

Exploring Plant Succession over the centuries at San Geronimo Valley & Roy’s Redwoods Preserve.

Leader: Kurt Rademacher

Please sign up for this field trip on Meetup.

Ever wondered what our natural vegetation looked like a century or two ago, or might in the future?  Though few wildflowers yet grace the February hillsides, come join us for an intriguing 2-mile stroll to piece together clues in today’s woodlands, meadows, chaparral, and forests which reveal the succession of these vegetation types, each modifying the conditions it initially found suitable, until they are replaced in turn by other plant communities, and those by yet other plants.  See the evidence of ancient events like fires or floods which set it all back to the earlier stages to start over yet again—or in some cases, have held one plant community in place for many centuries!

We’ll begin near Woodacre and then drive to Roys Redwoods Preserve.  The trip will involve two miles of moderate hiking with about 300 feet elevation gain and return.  Trail may be muddy in some places.

Directions:   Meet us at the intersection of Sir Francis Drake Blvd. and San Geronimo Valley Road (about a mile east of Woodacre). https://maps.app.goo.gl/Xj2kprSE8VStYnxC8

Later, we will drive about 1.3 miles to re-convene at Roys Redwoods Preserve.

Bring: Water, a snack/lunch. Dress in layers.  Sturdy footwear.

Rain cancels.

Email Ann with any question.

Text for day-of-trip questions or issues: 530-521-4402

If you have not done so already, please sign the CNPS Marin 2026 Waiver 

Limit of 15.