Russ Aguilar, San Bruno Mountain Watch’s Interpretive Specialist, will lead a hike to the Nike Missile radar site on San Bruno Mountain from 10AM to 1PM on Saturday, April 26th

The walk will focus on an early-warning radar and missile-control site on the mountaintop, active beginning in the 1950s, as part of Nike anti-aircraft defense systems.

Help remove invasive broom from the grasslands along the ridge. These stewardship efforts will help protect habitat for the endangered mission blue and callippe silverspot butterflies and encourage an increased abundance of native wildflowers.

Orchard Partners, LLC, the developer of the proposed warehouse and distribution center on San Bruno Mountain within the Guadalupe Quarry is organizing a community open house on Wednesday, April 23, from 5 – 7 PM at 240 Valley Drive in Brisbane.

Please attend and express your concerns about this proposal!

Join a guided hike of the Summit Loop on San Bruno Mountain!

Help remove invasive weeds like French broom, fennel, and pincushion plant from the grasslands along the ridge of Buckeye Canyon. These stewardship efforts will help protect habitat for the endangered mission blue and callippe silverspot butterflies.

Be part of the Colma Creek Collective! Work with San Bruno Mountain Watch to improve the headwaters of Colma Creek. The event will focus on planting natives and invasive plant removal in an important riparian area for birds.

Help remove invasive broom from the grasslands along the ridge. These stewardship efforts will help protect habitat for the endangered mission blue and callippe silverspot butterflies and encourage an increased abundance of native wildflowers.

Join a guided hike of the Summit Loop on San Bruno Mountain!

Colma Creek flows from the peaks of San Bruno Mountain all the way to the San Francisco Bay. Help us revitalize a portion of Colma Creek's shoreline along the Bay Trail. Together we can create a more biodiverse, resilient, and beautiful creek. Join us for a variety of activities including invasive plant removal, trash pick-up, bird watching, water-coloring and other art, storytelling, and more. Free educational booklet provided. All ages!

Help remove invasive weeds like poison hemlock, nightshade, bristly ox-tongue, and pincushion plants from the base of Buckeye Canyon! The canyon was damaged by winter storms that caused landslides and erosion. Controlling the invasive plants that have emerged in these impacted areas will help native plants re-establish.

Russ Aguilar, San Bruno Mountain Watch’s Interpretive Specialist, will lead an amphibian walk in Own Canyon, from 10AM to 12PM on Saturday, March 8th!

The walk will focus on the Pacific Chorus Frogs that are currently breeding in the canyon. We will discuss the special adaptations these various species have to survive in the San Bruno Mountain ecosystem. We will also explore a trail to see what other kinds of amphibians we can find. Expect to get muddy!

Join San Bruno Mountain Watch for a walk on the Northeast Ridge of San Bruno Mountain. We’ll gather to look directly into the mountain’s Guadalupe Quarry across the valley.

We will talk about the troubling proposal to develop in the quarry and have chairs and tables set up along with arts and crafts materials for making postcards—if you feel inspired, we hope you’ll write a postcard expressing your vision for the Quarry that can be shared with local elected officials!

Join a guided hike of the Summit Loop on San Bruno Mountain!

Help plant native plants, sow lupine seeds, and remove invasive weeds from the grasslands along the ridge. These stewardship efforts will help protect habitat for the endangered mission blue and callippe silverspot butterflies and encourage an increased abundance of native wildflowers.

Mission Blue Nursery Winter Plant Sale! 10am to 3pm on Saturday, January 25th from 10am to 3pm. Click for Sale Inventory

Be part of the Colma Creek Collective! Work with San Bruno Mountain Watch to improve the headwaters of Colma Creek. The event will focus on planting natives and invasive plant removal in an important riparian area for birds.

Join a guided hike of the Summit Loop on San Bruno Mountain!

Help San Bruno Mountain Watch maintain the San Bruno Mountain Botanical Garden at San Bruno Mountain State & County Park!

Gardening activities may include planting, weeding, pruning, mulching, and watering.

Wreath-making workshop at Mission Blue Nursery using San Bruno Mountain native plants! Also, watercolor your own botanical greeting cards!

Join us for an interactive workday as we maintain the test plot at the Crocker Gate Trailhead of San Bruno Mountain in Daly City!

Be part of the Colma Creek Collective! Work with San Bruno Mountain Watch to improve the headwaters of Colma Creek. The event will focus on invasive plant removal in an important riparian area for birds.

Help San Bruno Mountain Watch maintain the San Bruno Mountain Botanical Garden at San Bruno Mountain State & County Park!

Gardening activities may include weeding, pruning, mulching, and watering.

Help remove invasive weeds like French broom, fennel, and pincushion plant from the grasslands along the ridge of Buckeye Canyon. These stewardship efforts will help protect habitat for the endangered mission blue and callippe silverspot butterflies.

Join the Dune Defenders on the ancient dunes on the west end of San Bruno Mountain! We’ll be removing ice plant and other invasive plants to benefit the endangered San Francisco Lessingia plant and other native dune flora.

Join the Mission Blue Nursery team on San Bruno Mountain!

Help us collect seeds and cuttings for the nursery. Each month we’ll focus on and learn about different species and regions of the mountain. We’ll also lead seed cleaning and processing activities after collecting.

Be part of the Colma Creek Collective! Work with San Bruno Mountain Watch to improve the headwaters of Colma Creek. The event will focus on invasive plant removal in an important riparian area for birds.

Join a guided hike of the Summit Loop on San Bruno Mountain!

Help San Bruno Mountain Watch maintain the San Bruno Mountain Botanical Garden at San Bruno Mountain State & County Park!

Gardening activities may include weeding, pruning, mulching, and watering.

Help remove invasive weeds like French broom, fennel, and pincushion plant from the grasslands along the ridge of Buckeye Canyon. These stewardship efforts will help protect habitat for the endangered mission blue and callippe silverspot butterflies.

Join us for an interactive workday as we maintain the test plot at the Crocker Gate Trailhead of San Bruno Mountain in Daly City!