Not all thistle are created equal... Our very special Brownie Thistle, Cirsium quercetorum, is a California endemic (found only in California) and is visible on San Bruno Mountain and other sites in San Mateo County. Our non-native, and very invasive, Italian Thistle, Carduus pycnocephalus, is unfortunately present too. So be on the lookout for the low-growing Brownie Thistle on your next hike - and you'll agree that even a thorny thistle can be beautiful!

Rare dunes in Daly City threatened by development...

Rare dunes on San Bruno Mountain, along with their unique plant community, are being threatened by development. Please see our Daly City Dunes pages to understand the dunes and the threat they face - and to see what you can do to preserve them...

Support the Mountain...

San Bruno Mountain Watch is the kind of local grassroots organization that is often overlooked by both foundations and individuals who want to donate to environmental causes - help us to continue our work to safeguard open space right here in our own community. Read Paul Bouscal's inspirational story in our latest fundraising letter...

 

Mission:  We will preserve and expand the native ecosystems of

San Bruno Mountain, in perpetuity.

Education Stewardship Conservancy Advocacy