This event has passed — it happened Saturday, September 19, 2026. See what's coming up →
Habitat Restoration: Yellow Star Thistle Removal
Pull invasive yellow star thistle alongside Midpen staff at Sierra Azul Open Space Preserve.
Start your Pride Weekend off by joining Midpen staff for a fun time removing invasive yellow star thistle in Sierra Azul Open Space Preserve. Cathedral Oaks is located in a closed area of Sierra Azul…
- When
- Saturday, September 19, 2026 · 9:30 AM–1:30 PM
- Where
- Sierra Azul Preserve, San José Map
- Listed by
- Midpen Open Space
- Refreshed