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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
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
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
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
All the Ways to Give
Workplace Matching
Monthly Giving
Financials
Donate
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 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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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 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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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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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!

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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.

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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!

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Celebrate Mother's Day in Nature, Volunteer at Redwood Creek (Redwood City)
May
11

Celebrate Mother's Day in Nature, Volunteer at Redwood Creek (Redwood City)

  • Sunday, May 11, 2025
  • 9:00 AM 12:00 PM
  • Redwood Creek (map)
  • Google Calendar ICS

Honor mothers of all kind by volunteering your time in nature with Grassroots Ecology and Peninsula Open Space Trust in Redwood City!

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Volunteer Outdoors at Pearson-Arastradero Preserve
May
10

Volunteer Outdoors at Pearson-Arastradero Preserve

  • Saturday, May 10, 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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High School Youth Stewards at San Francisquito Creek/Bol Park
May
9

High School Youth Stewards at San Francisquito Creek/Bol Park

  • Friday, May 9, 2025
  • 4:00 PM 6:00 PM
  • Bol Park (map)
  • Google Calendar ICS

Meet new friends, learn about nature, enhance your observational skills, and help restore the natural ecosystems within Bol Park and the San Francisquito Creek watershed!

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BIPOC Volunteer Workday in Los Altos Hills at Byrne Preserve
May
9

BIPOC Volunteer Workday in Los Altos Hills at Byrne Preserve

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

Volunteer your time to help increase biodiversity at Byrne Preserve!

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Volunteer Outside in Woodside at Huddart Park
May
4

Volunteer Outside in Woodside at Huddart Park

  • Sunday, May 4, 2025
  • 1:30 PM 4:30 PM
  • Huddart Park Redwood Shelter Group Area (map)
  • Google Calendar ICS

Volunteer your time to improve local ecosystems at Huddart Park!

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High School Youth Stewards at San Francisquito Creek/Bol Park
May
2

High School Youth Stewards at San Francisquito Creek/Bol Park

  • Friday, May 2, 2025
  • 4:00 PM 6:00 PM
  • Adobe Creek Trail (map)
  • Google Calendar ICS

Meet new friends, learn about nature, enhance your observational skills, and help restore the natural ecosystems within Bol Park and the San Francisquito Creek watershed!

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Plant Sale at CNPS 50th Annual Wildflower Show
Apr
26

Plant Sale at CNPS 50th Annual Wildflower Show

  • Saturday, April 26, 2025
  • 9:30 AM 4:00 PM
  • West Valley College (map)
  • Google Calendar ICS

Shop in-person for a small selection of native plants, or pick up pre-orders, at CNPS SCV’s Wildflower Show.

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Volunteer Outdoors in East Palo Alto at Cooley Landing
Apr
26

Volunteer Outdoors in East Palo Alto at Cooley Landing

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

Volunteer your time with Grassroots Ecology and Peninsula Open Space Trust to help increase biodiversity in East Palo Alto!

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City Nature Challenge Bioblitz at Shoreline in Mountain View
Apr
26

City Nature Challenge Bioblitz at Shoreline in Mountain View

  • Saturday, April 26, 2025
  • 9:00 AM 11:30 AM
  • Mountain View Shoreline (map)
  • Google Calendar ICS

Let's discover and document what lives at the baylands.

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Annual Spring Cleanup in Redwood City
Apr
26

Annual Spring Cleanup in Redwood City

  • Saturday, April 26, 2025
  • 8:30 AM 12:00 PM
  • Public Works Services (map)
  • Google Calendar ICS

In honor of Earth Day, the City of Redwood City – Pride and Beautification Committee is hosting its Annual Spring Cleanup event. FREE breakfast and FREE BBQ lunch!

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Apr
25

High School Youth Stewards at San Francisquito Creek/Bol Park

  • Friday, April 25, 2025
  • 4:00 PM 6:00 PM
  • Bol Park (map)
  • Google Calendar ICS

Meet new friends, learn about nature, enhance your observational skills, and help restore the natural ecosystems within Bol Park and the San Francisquito Creek watershed!

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Spring Flowers Naturalist Walk in Los Altos Hills at Byrne Preserve
Apr
23

Spring Flowers Naturalist Walk in Los Altos Hills at Byrne Preserve

  • Wednesday, April 23, 2025
  • 4:30 PM 7:30 PM
  • Byrne Preserve (map)
  • Google Calendar ICS

Celebrate spring with a guided walk featuring native wildflowers!

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Speed Weeders: Volunteer Outdoors at Pearson-Arastradero Preserve
Apr
23

Speed Weeders: Volunteer Outdoors at Pearson-Arastradero Preserve

  • Wednesday, April 23, 2025
  • 9:30 AM 11:30 AM
  • Pearson-Arastradero Preserve (map)
  • Google Calendar ICS

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

View Event →
Apr
22

Earth Day Volunteering in Los Gatos at Bear Creek Redwoods

  • Tuesday, April 22, 2025
  • 1:00 PM 4:00 PM
  • Bear Creek Redwoods Preserve (map)
  • Google Calendar ICS

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

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Apr
20

Volunteer Outdoors in Los Gatos at Cherry Springs

  • Sunday, April 20, 2025
  • 9:00 AM 12:00 PM
  • Cherry Springs Pond (map)
  • Google Calendar ICS

Volunteer your time to increase biodiversity at Cherry Springs in Sierra Azul Open Space Preserve.

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Apr
18

High School Youth Stewards at San Francisquito Creek/Bol Park

  • Friday, April 18, 2025
  • 4:00 PM 6:00 PM
  • Bol Park (map)
  • Google Calendar ICS

Meet new friends, learn about nature, enhance your observational skills, and help restore the natural ecosystems within Bol Park and the San Francisquito Creek watershed!

View Event →
Apr
17

Seniors 65+ Volunteer at McClellan Ranch Preserve in Cupertino

  • Thursday, April 17, 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!

View Event →
Apr
16

High School Youth Stewards at Stulsaft Park - Session #5

  • Wednesday, April 16, 2025
  • 4:00 PM 6:00 PM
  • Stulsaft Park (map)
  • Google Calendar ICS

Meet new friends, learn about nature, enhance your observational skills, and help restore the natural ecosystems within Stulsaft Park!

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Trash Pickup & Bird Walk at Redwood Creek with Youth Climate Ambassadors
Apr
13

Trash Pickup & Bird Walk at Redwood Creek with Youth Climate Ambassadors

  • Sunday, April 13, 2025
  • 2:30 PM 4:30 PM
  • Redwood Creek (behind Carl's Jr) (map)
  • Google Calendar ICS

Join the Youth Climate Ambassadors (YCA) for an event where we will remove trash from a local waterway and learn about native marsh birds.

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Volunteer as a Greeter/Docent at the Growing Natives Garden Tour 2025
Apr
13

Volunteer as a Greeter/Docent at the Growing Natives Garden Tour 2025

  • Sunday, April 13, 2025
  • 10:00 AM 4:00 PM
  • Santa Clara or San Mateo County (map)
  • Google Calendar ICS

Volunteer as a Greeter/Docent at the Growing Natives Garden Tour 2025

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Wild About Wildflowers  Naturalist Walk at Pearson-Arastradero Preserve
Apr
13

Wild About Wildflowers Naturalist Walk at Pearson-Arastradero Preserve

  • Sunday, April 13, 2025
  • 9:00 AM 12:00 PM
  • Pearson-Arastradero Preserve (map)
  • Google Calendar ICS

Join a guided walk highlighting the beauty of native CA spring wildflowers!

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Volunteer at McClellan Ranch Preserve in Cupertino
Apr
13

Volunteer at McClellan Ranch Preserve in Cupertino

  • Sunday, April 13, 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 →
Volunteer as a Greeter/Docent at the Growing Natives Garden Tour 2025
Apr
12

Volunteer as a Greeter/Docent at the Growing Natives Garden Tour 2025

  • Saturday, April 12, 2025
  • 10:00 AM 4:00 PM
  • Santa Clara or San Mateo County (map)
  • Google Calendar ICS

Volunteer as a Greeter/Docent at the Growing Natives Garden Tour 2025

View Event →
Plant Sale at the Growing Natives Garden Tour
Apr
12

Plant Sale at the Growing Natives Garden Tour

  • Saturday, April 12, 2025
  • 10:00 AM 4:00 PM
  • San Jose (register for tour to see address) (map)
  • Google Calendar ICS

Shop in-person for a small selection of native plants, or pick up pre-orders, at the Growing Natives Garden Tour.

View Event →
Volunteer Outdoors: Habitat Restoration at Bedwell Bayfront Park
Apr
12

Volunteer Outdoors: Habitat Restoration at Bedwell Bayfront Park

  • Saturday, April 12, 2025
  • 10:00 AM 12:00 PM
  • Bedwell Bayfront Park (map)
  • Google Calendar ICS

Let's tend a pollinator garden at Bedwell Bayfront Park!

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Womxn+ in the Weeds Workday: Volunteer at Pearson-Arastradero Preserve
Apr
12

Womxn+ in the Weeds Workday: Volunteer at Pearson-Arastradero Preserve

  • Saturday, April 12, 2025
  • 9:00 AM 12:00 PM
  • Arastradero Preserve (map)
  • Google Calendar ICS

Calling all women and non-binary identifying community members! Join POST and Grassroots Ecology for an affinity group volunteer workday.

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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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