Learn about flowers that only appear after fire events. $10–$12. Parking: $7. 2 sessions: 9:30–11:30 a.m. & 1–3 p.m. Hood Mountain Regional Park & Preserve. 1450 N. Pythian Rd., Santa Rosa. Sign up for 9:30 a.m.: tinyurl.com/4ddhnrwv. Sign up for 1 p.m.: tinyurl.com/urcthr4j.