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UC California Naturalist Program

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UC Climate Stewards Logo
A statewide program of the University of California's Division of Agriculture and Natural Resources, the UC California Naturalist Program is designed to introduce Californians to the wonders of our unique ecology, engage the public in study and stewardship of California’s natural communities, and increase community and ecosystem resilience. 

The mission of the UC California Naturalist Program is to foster a diverse community of naturalists and promote stewardship of California's natural resources through education and service.

The UC California Naturalist Program is the hub of a collective impact network. We currently offer two certification courses: UC California Naturalist and UC Climate Stewards. To become a certified California Naturalist or UC Climate Steward, participants need to complete a 40+ hour course. Read more about us or find a course near you. 

News & Inspiration

Program Updates



News: 2022 UC California Naturalist and Climate Stewards certification courses are being announced on an ongoing bases. Take a course near you!

Save the date for our 2022 Statewide Conference and 10th Anniversary Celebration! October 7-9, 2022, North Shore Lake Tahoe.

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Resources: New Participatory science short course. The UC California Naturalist Program and the Center for Community and Citizen Science (UC Davis School of Education) collaborated to produce a three-part, online, asynchronous training that introduces the concepts, benefits and methods of participatory science to extension and education practitioners. 

Resources: Hot off the Press! The third publication in the California Natural History publication series: Natural History of the California Current by Christopher Pincetich and Sabrina Drill. This series includes overviews of specific bioregions and topics to help sharpen the reader's scientific understanding of California's ecosystems and environmental stewardship.

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 Resources: CONES: California Online Naturalist Event Series. Enjoy our latest presentation on Celebrating California Biodiversity Day: Biodiversity in Your Spaces with UC California Naturalist program instructors. 

Meet the Community: View the CalNat Story Map and Climate Stewards Story Map. In pictures and words, we seek to share the inspiring stories of California Naturalists and Climate Stewards from around the state. Share Your California Naturalist or Climate Stewards Story here!

Hat Credit_Alicia Torregrosa
Gear: Need some UC California Naturalist gear to outfit your adventures?! Acorn Naturalist is the exclusive vendor of CalNat gear: hats, hoodies, patches, bags & tee shirts. UC Climate Stewards gear TBA. 


Download: California Naturalist Handbook 30% off Flier (UC California Naturalist certification course required text)



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Download: Climate Stewardship: Taking Collective Action to Protect California 30% off Flier (UC Climate Stewards certification course required text)