San Diego Chapter CNPS

Preserving San Diego and Imperial County’s plant diversity for a sustainable future


Photo credit: Silke Gathmann

From the 70 miles of beaches in the west, through the hills, mesas, and canyons in the middle, to the snow-capped mountains and sunbaked deserts in the east, the 4,261 square miles of San Diego County are one of the most biologically diverse regions in the world. This county is home to over 1,500 species of native plants, more than 500 bird species, and hundreds of species of reptiles, insects and mammals. Among them you can find threatened species like the Coastal California Gnatcatcher, Quino Checkerspot Butterfly, Willowy Mint, and Otay Tarplant.

Imperial County is immediately east of San Diego county and almost the same size at 4,284 square miles. Although it’s primarily desert, it does contain some amazing features such as Algodones Dunes, the Salton Sea, the Colorado River, and numerous wildlife refuges. Over 900 native species of plants and over 400 species of wildlife call this county home, including numerous succulent species, dune endemic plants, flat-tailed horned lizards, and burrowing owls.

At the CNPS San Diego Chapter, we work tirelessly to preserve, restore, and educate the public about this remarkable biodiversity. Join us to help ensuring that future generations can continue to enjoy the treasures in our region.



Arnold Boulder Mountain Preserve Fundraising Event in Poway

Saturday April 20th, 3:00 – 7:30 PM

See Event Details

Seeds & Bulbs

Preserving genetic diversity

Bird Park

Wildscaping Bird Park: CNPS San Diego’s native plant habitat garden initiative

Field Trips

Exploring San Diego County’s wild places

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