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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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Notes From the Field
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Grassroots Ecology
Community Engagement
Land Stewardship
Urban Ecology
Native Plant Nursery
Nature Education
Workforce Development
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
Calendar of Events
Volunteer
Request a Group Event
Youth Stewards
Internships
AmeriCorps Programs
Notes From the Field
Support Local Biodiversity
About Us
Staff
Board
Our Impact
News and Press
Contact Us
Career Opportunities
All the Ways to Give
Workplace Matching
Monthly Giving
Financials
Donate
Folder: What We Do
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Community Engagement
Land Stewardship
Urban Ecology
Native Plant Nursery
Nature Education
Workforce Development
Folder: Where We Work
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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
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Calendar of Events
Volunteer
Request a Group Event
Youth Stewards
Internships
AmeriCorps Programs
Notes From the Field
Support Local Biodiversity
Folder: Who We Are
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About Us
Staff
Board
Our Impact
News and Press
Contact Us
Career Opportunities
Folder: Support Us
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All the Ways to Give
Workplace Matching
Monthly Giving
Financials
Donate
Volunteer Outside at McClellan Ranch Preserve
Nov
21

Volunteer Outside at McClellan Ranch Preserve

  • Friday, November 21, 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 in Woodside: French Broom Removal at Huddart Park
Nov
23

Volunteer in Woodside: French Broom Removal at Huddart Park

  • Sunday, November 23, 2025
  • 9:30 AM 12:30 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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Volunteer Outdoors in Los Gatos at Bear Creek Redwoods
Nov
24

Volunteer Outdoors in Los Gatos at Bear Creek Redwoods

  • Monday, November 24, 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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Seniors 65+: Volunteer Outdoors in Cupertino at McClellan Ranch Preserve
Dec
2

Seniors 65+: Volunteer Outdoors in Cupertino at McClellan Ranch Preserve

  • Tuesday, December 2, 2025
  • 10:00 AM 12:00 PM
  • McClellan Ranch Preserve (map)
  • Google Calendar ICS

Seniors 65+: help maintain our native plant meadow this fall!

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Volunteer Outdoors at Redwood Grove in Los Altos
Dec
6

Volunteer Outdoors at Redwood Grove in Los Altos

  • Saturday, December 6, 2025
  • 9:00 AM 12:00 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: Habitat Restoration at Bedwell Bayfront Park
Dec
6

Volunteer Outdoors: Habitat Restoration at Bedwell Bayfront Park

  • Saturday, December 6, 2025
  • 9:30 AM 12:00 PM
  • Bedwell Bayfront Park (map)
  • Google Calendar ICS

Get ready to roll up your sleeves and get dirty as we work together to restore the habitat at Bedwell Bayfront Park!

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Volunteer Outdoors in Los Gatos at Bear Creek Redwoods
Dec
7

Volunteer Outdoors in Los Gatos at Bear Creek Redwoods

  • Sunday, December 7, 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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Planting and Meditation in Palo Alto with Dharma Treasury Temple
Nov
19

Planting and Meditation in Palo Alto with Dharma Treasury Temple

  • Wednesday, November 19, 2025
  • 9:00 AM 12:00 PM
  • Pearson-Arastradero Preserve (map)
  • Google Calendar ICS

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

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Volunteer Outside: Plant at Byrne Preserve in Los Altos Hills
Nov
16

Volunteer Outside: Plant at Byrne Preserve in Los Altos Hills

  • Sunday, November 16, 2025
  • 1:30 PM 4:30 PM
  • Byrne Preserve (map)
  • Google Calendar ICS

Volunteer your time to help increase biodiversity at Byrne Preserve by planting native plants!

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Volunteer Outside at Byrne Preserve in Los Altos Hills
Nov
16

Volunteer Outside at Byrne Preserve in Los Altos Hills

  • Sunday, November 16, 2025
  • 9:00 AM 12:00 PM
  • Byrne Preserve (map)
  • Google Calendar ICS

Volunteer your time to help increase biodiversity at Byrne Preserve by planting native plants!

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Volunteer Outdoors in East Palo Alto at Ravenswood Open Space Preserve
Nov
15

Volunteer Outdoors in East Palo Alto at Ravenswood Open Space Preserve

  • Saturday, November 15, 2025
  • 1:00 PM 4:00 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 in Mountain View: Shoreline Marsh Habitat Restoration
Nov
15

Volunteer Outdoors in Mountain View: Shoreline Marsh Habitat Restoration

  • Saturday, November 15, 2025
  • 9:00 AM 12:00 PM
  • PARKING LOCATION, SEE DESCRIPTION FOR EVENT LOCATION (map)
  • Google Calendar ICS

Volunteer your time with Grassroots Ecology to help increase biodiversity in Mountain View!

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Volunteer Outdoors at Redwood Grove in Los Altos
Nov
14

Volunteer Outdoors at Redwood Grove in Los Altos

  • Friday, November 14, 2025
  • 9:00 AM 12:00 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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Nurture Nature: Volunteer Outside at McClellan Ranch Preserve
Nov
9

Nurture Nature: Volunteer Outside at McClellan Ranch Preserve

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

Volunteer your time to improve habitat health in Cupertino!

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Volunteer Outdoors in Palo Alto at Pearson-Arastradero Preserve
Nov
8

Volunteer Outdoors in Palo Alto at Pearson-Arastradero Preserve

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

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

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Seniors 65+: Volunteer Outdoors in Cupertino at McClellan Ranch Preserve
Nov
4

Seniors 65+: Volunteer Outdoors in Cupertino at McClellan Ranch Preserve

  • Tuesday, November 4, 2025
  • 10:00 AM 12:00 PM
  • McClellan Ranch Preserve (map)
  • Google Calendar ICS

Seniors 65+: help maintain our native plant meadow this fall!

View Event →
Volunteer Outdoors in Redwood City: Habitat Restoration at Redwood Creek
Nov
2

Volunteer Outdoors in Redwood City: Habitat Restoration at Redwood Creek

  • Sunday, November 2, 2025
  • 9:30 AM 12:30 PM
  • Redwood Creek (map)
  • Google Calendar ICS

Volunteer with Peninsula Open Space Trust and Grassroots Ecology to increase biodiversity in Redwood City!

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Volunteer Outdoors in Los Gatos at Bear Creek Redwoods
Nov
2

Volunteer Outdoors in Los Gatos at Bear Creek Redwoods

  • Sunday, November 2, 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 →
Night Hike at Pearson-Arastradero Preserve
Oct
26

Night Hike at Pearson-Arastradero Preserve

  • Sunday, October 26, 2025
  • 5:30 PM 8:30 PM
  • Arastradero Preserve (map)
  • Google Calendar ICS

A spooooky evening of after-dark nature exploration!

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Día de los Muertos at Cooley Landing in East Palo Alto
Oct
26

Día de los Muertos at Cooley Landing in East Palo Alto

  • Sunday, October 26, 2025
  • 12:00 PM 3:00 PM
  • Cooley Landing (map)
  • Google Calendar ICS

¡Celebre el Día de los Muertos con nosotros en actividades artesanales y musica para toda la familia!

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Volunteer Outdoors in Alviso at the Burrowing Owl Project (18+)
Oct
24

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

  • Friday, October 24, 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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Volunteer Outdoors in Palo Alto at Pearson-Arastradero Preserve
Oct
22

Volunteer Outdoors in Palo Alto at Pearson-Arastradero Preserve

  • Wednesday, October 22, 2025
  • 9:00 AM 12:00 PM
  • Arastradero Preserve (map)
  • Google Calendar ICS

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

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Volunteer in Redwood City: Stulsaft Park Habitat Restoration
Oct
19

Volunteer in Redwood City: Stulsaft Park Habitat Restoration

  • Sunday, October 19, 2025
  • 9:30 AM 12:30 PM
  • Stulsaft Park (map)
  • Google Calendar ICS

Volunteer with Grassroots Ecology to support biodiversity at Stulsaft Park!

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Volunteer Outdoors in Palo Alto at Foothills Nature Preserve
Oct
19

Volunteer Outdoors in Palo Alto at Foothills Nature Preserve

  • Sunday, October 19, 2025
  • 9:00 AM 12:00 PM
  • Foothills Nature Preserve Interpretive Center (map)
  • Google Calendar ICS

Volunteer your time to increase biodiversity at Foothills Nature Preserve!

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CNPS Native Plant Sale at Hidden Villa
Oct
18

CNPS Native Plant Sale at Hidden Villa

  • Saturday, October 18, 2025
  • 10:00 AM 3:00 PM
  • Dana Center at Hidden Villa (map)
  • Google Calendar ICS

Stock up for fall planting season during our fall plant sale at Hidden Villa, in partnership with the California Native Plant Society.

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Volunteer Outdoors in Mountain View: Shoreline Marsh Habitat Restoration
Oct
18

Volunteer Outdoors in Mountain View: Shoreline Marsh Habitat Restoration

  • Saturday, October 18, 2025
  • 9:00 AM 12:00 PM
  • PARKING LOCATION, SEE DESCRIPTION FOR EVENT LOCATION (map)
  • Google Calendar ICS

Volunteer your time with Grassroots Ecology to help increase biodiversity in Mountain View!

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Nature Caminata: Observar Aves/Bird Watching en East Palo Alto
Oct
18

Nature Caminata: Observar Aves/Bird Watching en East Palo Alto

  • Saturday, October 18, 2025
  • 8:30 AM 10:30 AM
  • Cooley Landing (map)
  • Google Calendar ICS

Come explore the salt marshes of Cooley Landing con Grassroots Ecology, SFBBO y POST for a morning of bird watching. En Español y English!

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Birding & Habitat Restoration at McClellan Ranch Preserve
Oct
17

Birding & Habitat Restoration at McClellan Ranch Preserve

  • Friday, October 17, 2025
  • 9:00 AM 11:00 AM
  • McClellan Ranch Preserve (map)
  • Google Calendar ICS

Volunteer with Grassroots Ecology and the Santa Clara Valley Bird Alliance to improve habitat for wildlife!

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Nurture Nature: Volunteer Outside at McClellan Ranch Preserve
Oct
12

Nurture Nature: Volunteer Outside at McClellan Ranch Preserve

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

Volunteer your time to improve habitat health near Stevens Creek in Cupertino!

View Event →
Volunteer Outdoors: Habitat Restoration at Bedwell Bayfront Park
Oct
11

Volunteer Outdoors: Habitat Restoration at Bedwell Bayfront Park

  • Saturday, October 11, 2025
  • 9:30 AM 12:00 PM
  • Bedwell Bayfront Park (map)
  • Google Calendar ICS

Get ready to roll up your sleeves and get dirty as we work together to restore the habitat at Bedwell Bayfront Park!

View Event →
Volunteer Outside at Pearson-Arastradero Preserve
Oct
11

Volunteer Outside at Pearson-Arastradero Preserve

  • Saturday, October 11, 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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Volunteer Stake-Cutting at Shoup Park in Los Altos
Oct
10

Volunteer Stake-Cutting at Shoup Park in Los Altos

  • Friday, October 10, 2025
  • 9:00 AM 12:00 PM
  • Shoup Park (map)
  • Google Calendar ICS

Volunteer your time to help us prepare our plant-marking stakes for restoration projects in Los Altos and beyond!

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Volunteer Outdoors in Mountain View: Shoreline Marsh Habitat Restoration
Sep
27

Volunteer Outdoors in Mountain View: Shoreline Marsh Habitat Restoration

  • Saturday, September 27, 2025
  • 9:00 AM 12:00 PM
  • Mountain View Shoreline (map)
  • Google Calendar ICS

Volunteer your time with Grassroots Ecology to help increase biodiversity in Mountain View!

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Volunteer Outside at Byrne Preserve in Los Altos Hills
Sep
26

Volunteer Outside at Byrne Preserve in Los Altos Hills

  • Friday, September 26, 2025
  • 9:00 AM 12:00 PM
  • Byrne Preserve (map)
  • Google Calendar ICS

Volunteer your time to help increase biodiversity at Byrne Preserve by pruning, mulching, and maintaining our planting areas!

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Volunteer at Sunnyvale Baylands Park
Sep
22

Volunteer at Sunnyvale Baylands Park

  • Monday, September 22, 2025
  • 9:30 AM 11:30 AM
  • Baylands Park (map)
  • Google Calendar ICS

Help sheet mulch and weed the pollinator garden at Sunnyvale Baylands Park!

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Volunteer Outdoors in Palo Alto at Foothills Nature Preserve
Sep
22

Volunteer Outdoors in Palo Alto at Foothills Nature Preserve

  • Monday, September 22, 2025
  • 9:00 AM 12:00 PM
  • Foothills Nature Preserve Interpretive Center (map)
  • Google Calendar ICS

Volunteer your time to increase biodiversity at Foothills Nature Preserve!

View Event →
2025 Coastal Cleanup Day at Cooley Landing
Sep
20

2025 Coastal Cleanup Day at Cooley Landing

  • Saturday, September 20, 2025
  • 9:00 AM 12:00 PM
  • Cooley Landing (map)
  • Google Calendar ICS

Join us for California's largest cleanup event, Coastal Cleanup Day! Enjoy your time at the baylands and help pick up trash!

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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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