Compassion Week: Volunteer Outdoors at Foothills Nature Preserve
Volunteer your time to prepare a planting area to increase biodiversity at Foothills Nature Preserve!
Volunteer Outside at McClellan Ranch Preserve in Cupertino
Volunteer with Grassroots Ecology to steward a meadow ecosystem!
Volunteer Outdoors in Alviso at the Burrowing Owl Project (18+)
Join us to improve habitat for the threatened South Bay burrowing owl population. This opportunity is for those aged 18+.
Volunteer Outdoors at Redwood Grove in Los Altos
Volunteer your time to help increase biodiversity in Los Altos at Redwood Grove Nature Preserve!
Volunteer Outdoors in MV Shoreline Marsh Habitat Restoration
Volunteer your time to help increase biodiversity in Mountain View at Shoreline!
Volunteer Outdoors in Palo Alto at Pearson-Arastradero Preserve
Volunteer your time to help increase biodiversity in Palo Alto at Pearson-Arastradero Preserve!
Volunteer Outdoors in East Palo Alto at Ravenswood
Join Grassroots Ecology to help increase biodiversity in East Palo Alto at Ravenswood Open Space Preserve!
CNPS Native Plant Sale at Hidden Villa
Stock up for planting season during our plant sale at Hidden Villa, in partnership with the California Native Plant Society.
Volunteer Outdoors in Menlo Park: Gardening for Pollinators at Alma Garden
Help increase and maintain the native biodiversity at Alma Pollinator Garden!
Volunteer Outdoors in Redwood City: Habitat Restoration at Redwood Creek
Volunteer with Grassroots Ecology to increase biodiversity in Redwood City!
Volunteer Outdoors at Redwood Grove in Los Altos
Volunteer your time to help increase biodiversity in Los Altos at Redwood Grove Nature Preserve!
Sheet Mulch at Foothills Nature Preserve in Palo Alto
Volunteer your time to prepare a planting area to increase biodiversity at Foothills Nature Preserve!
Stinkwort Weeding Party at Byrne Preserve in Los Altos Hills
Join us for an early morning weeding party to help native plants thrive in the grassland at Byrne Preserve!
2026 Coastal Cleanup Day at Cooley Landing
Join us for California's largest cleanup event, Coastal Cleanup Day! Enjoy your time at the baylands and help pick up trash!
Volunteer Outdoors at Redwood Grove in Los Altos
Volunteer your time to help increase biodiversity in Los Altos at Redwood Grove Nature Preserve!
2026 Coastal Cleanup Day at San Francisquito Creek
Grassroots Ecology and the City of Menlo Park are partnering to host volunteers for Coastal Cleanup Day at San Francisquito Creek. Join us!
2026 Coastal Cleanup Day in Redwood City
Join California's largest cleanup event, Coastal Cleanup Day! Hosted by the City of Redwood City.
Boost Biodiversity at Russian Ridge Open Space Preserve
Celebrate California Biodiversity Day by volunteering at Russian Ridge Open Space Preserve!
Volunteer Outdoors at Redwood Grove in Los Altos
Volunteer your time to help increase biodiversity in Los Altos at Redwood Grove Nature Preserve!
Volunteer Outdoors in East Palo Alto at Ravenswood
Join Grassroots Ecology to help increase biodiversity at Ravenswood Open Space Preserve!
Sunset Restoration at Russian Ridge Open Space Preserve
Volunteer your time to help increase biodiversity at Russian Ridge Open Space Preserve!
Volunteer Outdoors at Redwood Grove in Los Altos
Volunteer your time to help increase biodiversity in Los Altos at Redwood Grove Nature Preserve!
Volunteer Outdoors in Palo Alto at Pearson-Arastradero Preserve
Join Grassroots Ecology to support biodiversity at a local nature preserve!
The Canvas of Nature: Naturalist Walk at Pearson-Arastradero Preserve
Join for a guided walk where we will capture the beauty of the preserve's flora, fauna, and landscapes through art!
Volunteer Outdoors in Alviso at the Burrowing Owl Project (18+)
Join us to improve habitat for the threatened South Bay burrowing owl population. This opportunity is for those aged 18+.
Sheet Mulch at Byrne Preserve in Los Altos Hills
Join us for an early morning of sheet mulching and weeding to help native plants thrive at Byrne Preserve!
Busy Bees at Bol Park: Gather Data for CNPS' New BUG Project!
Let's discover and document what lives in our native urban gardens.
Sunset Restoration in Portola Valley at Hawthorns
Volunteer with your time to help increase biodiversity at Hawthorns Area of Windy Hill Preserve.
BioBlitz at Baylands Park in Sunnyvale
Discover and document nature at Baylands Park with the Sunnyvale Public Library!
Volunteer Outdoors in East Palo Alto at Cooley Landing
Join Grassroots Ecology to help increase biodiversity at Cooley Landing!
Volunteer Outdoors in Palo Alto at Foothills Nature Preserve
Volunteer your time to increase biodiversity at Foothills Nature Preserve!
Be a Star: Yellow Starthistle Weeding Party at Pearson-Arastradero Preserve
Join us for a sunny, weedy, weekday evening workday!
Give to the Grasslands: Volunteer in Portola Valley at Hawthorns
Volunteer with your time to help increase biodiversity at Hawthorns Area of Windy Hill Preserve.
Volunteer Outdoors at Redwood Grove in Los Altos
Volunteer your time to help increase biodiversity in Los Altos at Redwood Grove Nature Preserve!
Be a Star: Volunteer in Palo Alto at Pearson-Arastradero Preserve
Volunteer your time with Grassroots Ecology to help increase biodiversity in Palo Alto!
Yellow Starthistle Weeding Party at Byrne Preserve in Los Altos Hills
Join us for an early morning weeding party to help native plants thrive in the grassland at Byrne Preserve!
Fire Ecology Walk at Foothills Nature Preserve in Palo Alto
Learn about how fire is an essential part of local ecosystems at Foothills Nature Preserve!
Nature Caminata: Observar Aves/Bird Watching con SFBBO en East Palo Alto
Come explore the salt marshes of Cooley Landing con Grassroots Ecology y SFBBO for a morning of bird watching. En Español y English!
Be a Star: Yellow Starthistle Weeding Party *Pride Edition*
Celebrate Pride outside while helping restore grassland habitat. Join us for a sunny, weedy, weekday evening workday!
Yellow Starthistle Weeding Party at Byrne Preserve in Los Altos Hills
Join us for an early afternoon weeding party to help native plants thrive in the grassland at Byrne Preserve!