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A Seasonal Hiking Guide to the Peninsula and South Bay
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Highways and Habitats: Building Wildlife Crossings in Coyote Valley
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The Bay to Sea Trail: A Bold Vision You Can Start Enjoying Now
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Forest Management 101: Preparing for a Healthier Future
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POST to Purchase and Preserve San Gregorio Ranch in 2026
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Rooted in Wonder: Become a Tree Explorer at 5 Bay Area Parks

What's New

Families and individuals cluster on the shore and tidepools at Fitzgerald Marine Reserve.
My Favorite Ways to Experience the San Mateo County Coast
September 10, 2026
Fall brings out the best of the San Mateo County coast. Pick out a pumpkin, hike a blufftop trail, peer into a tide pool, or pair an ocean view with a slice of homemade pie!
Posted on By Anne Holmes
openspacetrust.org
butterfly-hero
Where to See Western Monarch Butterflies Near the Bay Area
September 3, 2026
Monarch butterflies will soon be arriving to overwinter in the Golden State. Learn where you can see them in the Bay Area.
Posted on By Leslie Patron
openspacetrust.org
BHF—Sunny-Day
What It Takes for a Local Farm to Flourish
September 2, 2026
Healthy farms require complex resources. Through our work on the San Mateo County Coast and Southern Santa Clara County, we know farms depend on affordable land, farmworkers, reliable water, functional infrastructure, healthy soil, and strong local markets.
Posted on By Dylan Sondermann
openspacetrust.org
Monarch Butterfly - POST
How to Help Save Western Monarch Butterflies in California
August 23, 2026
Western monarch butterflies are on the brink of extinction. Learn what you can do to save this iconic species.
Posted on By Peter Cowan, PhD
openspacetrust.org

Upcoming Events

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good fire fair
  • Outreach
  • In Person
Oct
10
Sat

Central Coast Good Fire Fair

  • 10 AM - 3 PM
See how good fire is used in the Central Coast. Learn the who, why, where, and how of good fire use. Free and open to the public, with activities for all ages.
Learn More
Bair Island Volunteer Workday
  • Volunteer
  • In Person
Oct
17
Sat

Bair Island Volunteer Workday

  • 9:00 AM
Join Peninsula Open Space Trust and San Francisco Bay Bird Observatory for this fun and unique opportunity to volunteer at Bair Island.
Register
Screenshot 2026-09-15 at 11.43.08 AM
  • Walks & Hikes
  • Volunteer
  • In Person
Oct
18
Sun

Coyote Creek Trail BioBlitz

  • 9:00 AM - 11:30 AM
Get ready to explore the hidden wonders of the Coyote Creek Trail with fellow nature enthusiasts at the BioBlitz event!
Register
Birding for Beginners
  • Birding
  • Walks & Hikes
  • In Person
Oct
24
Sat

Birding for Beginners

  • 9:00 AM
Come birding with POST and SMCBA and meet other birders! This is a beginner-friendly event open and accessible to all.
Register
bugs eye view 169
  • Major Events
  • Virtual
Oct
29
Thu

Bug’s Eye View (Online Event)

  • 7:00 PM - 8:15 PM
Discover Bay Area insects and the stories they have to tell. Join POST and entomologist Eddie Dunbar for a fun online discussion.
Register
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