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Grassroots Ecology
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Land Acknowledgement
Cupertino: McClellan Ranch Preserve
East Palo Alto: Cooley Landing
East Palo Alto: Ravenswood Open Space Preserve
La Honda: Russian Ridge
Los Altos: Redwood Grove Nature Preserve
Los Gatos: Bear Creek Redwoods Preserve
Los Altos Hills: Byrne Preserve
Mountain View: Shoreline
Palo Alto: Foothills Nature Preserve
Palo Alto: Pearson-Arastradero Preserve
Palo Alto: San Francisquito and Matadero Creeks
Portola Valley: Hawthorns Area of Windy Hill Preserve
Redwood City: Cordilleras and Redwood Creeks
Redwood City: Stulsaft Park
San Jose: Alviso Bufferlands
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Grassroots Ecology
What We Do
Community Engagement
Land Stewardship
Urban Ecology
Native Plant Nursery
Nature Education
Workforce Development
Where We Work
Map
Land Acknowledgement
Cupertino: McClellan Ranch Preserve
East Palo Alto: Cooley Landing
East Palo Alto: Ravenswood Open Space Preserve
La Honda: Russian Ridge
Los Altos: Redwood Grove Nature Preserve
Los Gatos: Bear Creek Redwoods Preserve
Los Altos Hills: Byrne Preserve
Mountain View: Shoreline
Palo Alto: Foothills Nature Preserve
Palo Alto: Pearson-Arastradero Preserve
Palo Alto: San Francisquito and Matadero Creeks
Portola Valley: Hawthorns Area of Windy Hill Preserve
Redwood City: Cordilleras and Redwood Creeks
Redwood City: Stulsaft Park
San Jose: Alviso Bufferlands
Get Involved
Calendar of Events
Volunteer
Request a Group Event
Youth Stewards
Internships
AmeriCorps Programs
Notes From the Field
Support Local Biodiversity
Who We Are
About Us
Staff
Board
Our Impact
News and Press
Contact Us
Career Opportunities
Support Us
Gear Drive 2025
All the Ways to Give
Workplace Matching
Monthly Giving
Financials
Donate
Folder: What We Do
Back
Community Engagement
Land Stewardship
Urban Ecology
Native Plant Nursery
Nature Education
Workforce Development
Folder: Where We Work
Back
Map
Land Acknowledgement
Cupertino: McClellan Ranch Preserve
East Palo Alto: Cooley Landing
East Palo Alto: Ravenswood Open Space Preserve
La Honda: Russian Ridge
Los Altos: Redwood Grove Nature Preserve
Los Gatos: Bear Creek Redwoods Preserve
Los Altos Hills: Byrne Preserve
Mountain View: Shoreline
Palo Alto: Foothills Nature Preserve
Palo Alto: Pearson-Arastradero Preserve
Palo Alto: San Francisquito and Matadero Creeks
Portola Valley: Hawthorns Area of Windy Hill Preserve
Redwood City: Cordilleras and Redwood Creeks
Redwood City: Stulsaft Park
San Jose: Alviso Bufferlands
Folder: Get Involved
Back
Calendar of Events
Volunteer
Request a Group Event
Youth Stewards
Internships
AmeriCorps Programs
Notes From the Field
Support Local Biodiversity
Folder: Who We Are
Back
About Us
Staff
Board
Our Impact
News and Press
Contact Us
Career Opportunities
Folder: Support Us
Back
Gear Drive 2025
All the Ways to Give
Workplace Matching
Monthly Giving
Financials
Donate
Volunteer Outdoors in Palo Alto at Foothills Nature Preserve
Aug
18

Volunteer Outdoors in Palo Alto at Foothills Nature Preserve

  • Monday, August 18, 2025
  • 8:30 AM 11:30 AM
  • Foothills Nature Preserve Interpretive Center (map)
  • Google Calendar ICS

Volunteer your time to increase biodiversity at Foothills Nature Preserve!

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Volunteer Outdoors in Alviso at the Burrowing Owl Project (18+)
Aug
20

Volunteer Outdoors in Alviso at the Burrowing Owl Project (18+)

  • Wednesday, August 20, 2025
  • 9:00 AM 11:30 AM
  • Burrowing Owl Project (map)
  • Google Calendar ICS

Join us to improve habitat for the threatened South Bay burrowing owl population.

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Sheet Mulching at Byrne Preserve in Los Altos Hills
Aug
22

Sheet Mulching at Byrne Preserve in Los Altos Hills

  • Friday, August 22, 2025
  • 9:00 AM 12:00 PM
  • Byrne Preserve (map)
  • Google Calendar ICS

Volunteer your time to help increase biodiversity at Byrne Preserve by preparing a new planting area with cardboard and mulch!

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Oaks and Galls Naturalist Walk and Bioblitz at Pearson-Arastradero Preserve
Aug
22

Oaks and Galls Naturalist Walk and Bioblitz at Pearson-Arastradero Preserve

  • Friday, August 22, 2025
  • 5:30 PM 8:00 PM
  • Pearson-Arastradero Preserve (map)
  • Google Calendar ICS

Join us for an evening guided walk to appreciate native oak trees, where we will stop half-way through for a bioblitz to look for galls.

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Volunteer Outdoors in East Palo Alto at Cooley Landing
Aug
23

Volunteer Outdoors in East Palo Alto at Cooley Landing

  • Saturday, August 23, 2025
  • 9:00 AM 12:00 PM
  • Cooley Landing Education Center (map)
  • Google Calendar ICS

Volunteer your time with Grassroots Ecology to help increase biodiversity in East Palo Alto!

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Volunteer Outdoors and Celebrate the Cottage at Redwood Grove Nature Preserve
Aug
28

Volunteer Outdoors and Celebrate the Cottage at Redwood Grove Nature Preserve

  • Thursday, August 28, 2025
  • 3:00 PM 6:30 PM
  • Redwood Grove Nature Preserve (map)
  • Google Calendar ICS

Help us transplant native plants and say goodbye to the caretaker cottage at Redwood Grove Nature Preserve!

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LGBTQ+ and Allies: Habitat Restoration at Pearson-Arastradero Preserve
Aug
9

LGBTQ+ and Allies: Habitat Restoration at Pearson-Arastradero Preserve

  • Saturday, August 9, 2025
  • 8:30 AM 11:30 AM
  • Pearson-Arastradero Preserve (map)
  • Google Calendar ICS

Join Grassroots Ecology for an affinity group volunteer workday for LGBTQ+ community members and allies!

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Yellow Starthistle Weeding Party in Los Altos Hills at Byrne Preserve
Aug
8

Yellow Starthistle Weeding Party in Los Altos Hills at Byrne Preserve

  • Friday, August 8, 2025
  • 9:00 AM 12:00 PM
  • Byrne Preserve (map)
  • Google Calendar ICS

Volunteer your time to help increase biodiversity at Byrne Preserve by removing a notoriously invasive species from the grassland!

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Afternoon Weeding Party at Pearson-Arastradero Preserve
Aug
7

Afternoon Weeding Party at Pearson-Arastradero Preserve

  • Thursday, August 7, 2025
  • 4:30 PM 7:00 PM
  • Pearson-Arastradero Preserve (map)
  • Google Calendar ICS

Join us for a sunny, weedy, weekday afternoon workday!

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Volunteer Outdoors in Los Gatos at Bear Creek Redwoods
Aug
6

Volunteer Outdoors in Los Gatos at Bear Creek Redwoods

  • Wednesday, August 6, 2025
  • 8:30 AM 11:30 AM
  • Bear Creek Redwoods Preserve (map)
  • Google Calendar ICS

Volunteer your time to increase biodiversity at Bear Creek Redwoods Open Space Preserve.

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Volunteer Outdoors at Cooley Landing
Jul
26

Volunteer Outdoors at Cooley Landing

  • Saturday, July 26, 2025
  • 9:00 AM 12:00 PM
  • Cooley Landing Education Center (map)
  • Google Calendar ICS

Volunteer your time with Grassroots Ecology to help increase biodiversity in East Palo Alto!

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Yellow Starthistle Weeding Party in Los Altos Hills at Byrne Preserve
Jul
25

Yellow Starthistle Weeding Party in Los Altos Hills at Byrne Preserve

  • Friday, July 25, 2025
  • 9:00 AM 12:00 PM
  • Byrne Preserve (map)
  • Google Calendar ICS

Volunteer your time to help increase biodiversity at Byrne Preserve by removing a notoriously invasive species from the grassland!

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Sunset Restoration at Russian Ridge Preserve
Jul
23

Sunset Restoration at Russian Ridge Preserve

  • Wednesday, July 23, 2025
  • 5:30 PM 8:00 PM
  • Russian Ridge Preserve Parking (map)
  • Google Calendar ICS

Volunteer your time to help increase biodiversity at Russian Ridge Open Space Preserve!

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Be a Star: Yellow Starthistle Weeding Party at Pearson-Arastradero Preserve
Jul
23

Be a Star: Yellow Starthistle Weeding Party at Pearson-Arastradero Preserve

  • Wednesday, July 23, 2025
  • 8:30 AM 11:30 AM
  • Pearson-Arastradero Preserve (map)
  • Google Calendar ICS

Join us for a sunny, weedy, weekday morning workday!

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Restore and Rejuvenate: BIPOC Volunteer Workday at in Los Altos
Jul
20

Restore and Rejuvenate: BIPOC Volunteer Workday at in Los Altos

  • Sunday, July 20, 2025
  • 9:00 AM 12:00 PM
  • Redwood Grove Nature Preserve (map)
  • Google Calendar ICS

We're inviting the BIPOC community to volunteer your time to help increase biodiversity in Los Altos at Redwood Grove Nature Preserve!

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Give to the Grasslands: Volunteer in Portola Valley at Hawthorns
Jul
20

Give to the Grasslands: Volunteer in Portola Valley at Hawthorns

  • Sunday, July 20, 2025
  • 8:30 AM 11:30 AM
  • Hawthorns Preserve (map)
  • Google Calendar ICS

Volunteer with your time to help increase biodiversity at Hawthorns Area of Windy Hill Preserve.

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Volunteer Outdoors at Pearson-Arastradero Preserve
Jul
19

Volunteer Outdoors at Pearson-Arastradero Preserve

  • Saturday, July 19, 2025
  • 8:30 AM 11:30 AM
  • Pearson-Arastradero Preserve (map)
  • Google Calendar ICS

Volunteer with Grassroots Ecology to support biodiversity in our local open spaces!

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Give to the Grasslands: Volunteer in Portola Valley at Hawthorns
Jul
14

Give to the Grasslands: Volunteer in Portola Valley at Hawthorns

  • Monday, July 14, 2025
  • 8:30 AM 11:30 AM
  • Hawthorns Preserve (map)
  • Google Calendar ICS

Volunteer with your time to help increase biodiversity at Hawthorns Area of Windy Hill Preserve.

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Volunteer Outdoors at Ravenswood Open Space Preserve
Jun
28

Volunteer Outdoors at Ravenswood Open Space Preserve

  • Saturday, June 28, 2025
  • 9:00 AM 12:00 PM
  • Ravenswood Open Space Preserve (map)
  • Google Calendar ICS

Volunteer your time with Grassroots Ecology to help increase biodiversity in East Palo Alto!

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Volunteer at McClellan Ranch Preserve in Cupertino
Jun
23

Volunteer at McClellan Ranch Preserve in Cupertino

  • Monday, June 23, 2025
  • 9:00 AM 12:00 PM
  • McClellan Ranch Preserve (map)
  • Google Calendar ICS

Volunteer your time to improve habitat health along Stevens Creek!

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Volunteer Outdoors at Pearson-Arastradero Preserve
Jun
21

Volunteer Outdoors at Pearson-Arastradero Preserve

  • Saturday, June 21, 2025
  • 8:30 AM 11:30 AM
  • Pearson-Arastradero Preserve (map)
  • Google Calendar ICS

Volunteer with Grassroots Ecology to support biodiversity in our local open spaces!

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Flower Frolic in Los Gatos at Cherry Springs Pond
Jun
19

Flower Frolic in Los Gatos at Cherry Springs Pond

  • Thursday, June 19, 2025
  • 9:00 AM 12:00 PM
  • Cherry Springs Pond (map)
  • Google Calendar ICS

Join us to explore the native biodiversity at Cherry Springs in Sierra Azul Open Space Preserve.

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Queer Restoration in Los Gatos at Bear Creek Redwoods
Jun
14

Queer Restoration in Los Gatos at Bear Creek Redwoods

  • Saturday, June 14, 2025
  • 9:00 AM 12:00 PM
  • Bear Creek Redwoods Preserve (map)
  • Google Calendar ICS

Celebrate Pride Outside with Grassroots Ecology and Branching Out Adventures to increase biodiversity at Bear Creek Redwoods!

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Juneteenth Celebration and Nature Walk with AWỌ at Byrne Preserve
Jun
11

Juneteenth Celebration and Nature Walk with AWỌ at Byrne Preserve

  • Wednesday, June 11, 2025
  • 2:30 PM 5:00 PM
  • Byrne Preserve (map)
  • Google Calendar ICS

AWỌ and Grassroots Ecology invites you to commemorate and celebrate Juneteenth at Byrne Preserve!

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Volunteer at McClellan Ranch Preserve in Cupertino
Jun
8

Volunteer at McClellan Ranch Preserve in Cupertino

  • Sunday, June 8, 2025
  • 9:00 AM 12:00 PM
  • McClellan Ranch Preserve (map)
  • Google Calendar ICS

Volunteer your time to improve habitat health along Stevens Creek!

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Garden and Meditate Outdoors at Redwood Grove Nature Preserve
Jun
6

Garden and Meditate Outdoors at Redwood Grove Nature Preserve

  • Friday, June 6, 2025
  • 9:00 AM 12:00 PM
  • Redwood Grove Nature Preserve (map)
  • Google Calendar ICS

Help us water our native plant restoration areas, then join us for a meditation session led by Dharma Treasury Temple.

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Sunset Restoration at Russian Ridge Preserve
May
28

Sunset Restoration at Russian Ridge Preserve

  • Wednesday, May 28, 2025
  • 5:30 PM 8:00 PM
  • Russian Ridge Preserve Parking (map)
  • Google Calendar ICS

Volunteer your time to help increase biodiversity at Russian Ridge Open Space Preserve!

View Event →
Volunteer Outdoors at Redwood Grove Nature Preserve in Los Altos
May
28

Volunteer Outdoors at Redwood Grove Nature Preserve in Los Altos

  • Wednesday, May 28, 2025
  • 9:30 AM 12:30 PM
  • Redwood Grove Nature Preserve (map)
  • Google Calendar ICS

Volunteer your time to help increase biodiversity in Los Altos at Redwood Grove Nature Preserve!

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Volunteer Outdoors in Redwood City: Steward and Sketch at Bair Island
May
25

Volunteer Outdoors in Redwood City: Steward and Sketch at Bair Island

  • Sunday, May 25, 2025
  • 9:00 AM 1:00 PM
  • Bair Island National Wildlife Refuge (map)
  • Google Calendar ICS

Volunteer your time to help increase biodiversity at Bair Island National Wildlife Refuge.

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Rooted in Culture: Latino Restoration Event at Stulsaft Park
May
24

Rooted in Culture: Latino Restoration Event at Stulsaft Park

  • Saturday, May 24, 2025
  • 9:00 AM 12:00 PM
  • Stulsaft Park (map)
  • Google Calendar ICS

Volunteer with Grassroots Ecology by participating in habitat restoration at Stulsaft Park!

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Volunteer Outdoors at Ravenswood Open Space Preserve
May
24

Volunteer Outdoors at Ravenswood Open Space Preserve

  • Saturday, May 24, 2025
  • 9:00 AM 12:00 PM
  • Ravenswood Open Space Preserve (map)
  • Google Calendar ICS

Volunteer your time with Grassroots Ecology to help increase biodiversity in East Palo Alto!

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Seniors 65+ Volunteer at McClellan Ranch Preserve in Cupertino
May
22

Seniors 65+ Volunteer at McClellan Ranch Preserve in Cupertino

  • Thursday, May 22, 2025
  • 10:00 AM 12:00 PM
  • 22221 McClellan Road Cupertino, CA, 95014 United States (map)
  • Google Calendar ICS

Seniors 65+: volunteer your time to improve habitat health along Stevens Creek!

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Volunteer Outdoors in Los Gatos at Bear Creek Redwoods
May
18

Volunteer Outdoors in Los Gatos at Bear Creek Redwoods

  • Sunday, May 18, 2025
  • 9:00 AM 12:00 PM
  • Bear Creek Redwoods Preserve (map)
  • Google Calendar ICS

Volunteer your time to increase biodiversity at Bear Creek Redwoods Open Space Preserve.

View Event →
Volunteer at McClellan Ranch Preserve in Cupertino
May
17

Volunteer at McClellan Ranch Preserve in Cupertino

  • Saturday, May 17, 2025
  • 9:00 AM 12:00 PM
  • McClellan Ranch Preserve (map)
  • Google Calendar ICS

Volunteer your time to improve habitat in our restored meadow!

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Volunteer at Sunnyvale Baylands Park
May
12

Volunteer at Sunnyvale Baylands Park

  • Monday, May 12, 2025
  • 9:30 AM 11:30 AM
  • Baylands Park (map)
  • Google Calendar ICS

Volunteer your time to build a pollinator garden at Sunnyvale Baylands Park!

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Volunteer at McClellan Ranch Preserve in Cupertino
May
11

Volunteer at McClellan Ranch Preserve in Cupertino

  • Sunday, May 11, 2025
  • 9:00 AM 12:00 PM
  • McClellan Ranch Preserve (map)
  • Google Calendar ICS

Volunteer your time to improve habitat health along Stevens Creek!

View Event →


3921 East Bayshore Road
Palo Alto, CA 94303
info@grassrootsecology.org
650.419.9880

Our mission is to engage and educate the public to restore local ecosystems. Grassroots Ecology is a 501(c)(3) nonprofit organization. Gifts are tax deductible to the fullest extent of the law. Our tax identification number is 81-3707643. 

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