An evening hike through the gardens to see the night life, Friday, 7:15 p.m., at Descanso Gardens, 1418 Descanso Drive, La Canada Flintridge, (818) 952-4401; http://www.descanso.com. $13.
* Workshop on organic gardening by guru Andy Lopez, Saturday, 10 a.m.-noon, at Quail Gardens, 230 Quail Gardens Drive, Encinitas, (760) 436-3036. $10.
* The Culver City Garden Club show and sale, Saturday, noon-5 p.m., Sunday, 10 a.m.-5 p.m., at Veterans Memorial Auditorium, 4117 Overland Ave. (at Culver Boulevard), Culver City. On Friday, nonmembers may enter plants they've grown, 3-9 p.m. Free.
Send garden announcements to Garden Events, Los Angeles Times, 202 W. 1st St., Los Angeles, CA 90012, at least three weeks before the event date.