Garden Calendar

* A tour of four mountain gardens presented by the Idyllwild Garden Club, Saturday, 10 a.m.-4 p.m. Tickets will be for sale by the totem pole in the center of Idyllwild, and a map will be provided. $5.

* Talk on growing begonias, Saturday, 9:30 a.m., at Sherman Gardens, 2647 E. Coast Highway, Corona del Mar, (949) 673-2261. Free.

* A seminar featuring a talk on “Bulletproof Plants” by landscape architect Owen E. Dell, and one on compost by composting expert Kreigh Hampel, Saturday. 10 a.m.-12:30 p.m., at Descanso Gardens, 1418 Descanso Drive, La Canada Flintridge, (818) 952-4401; https://www.descanso.com. $20.

Send garden announcements to Garden Events, Los Angeles Times, 202 W. 1st St., Los Angeles, CA 90064, at least three weeks before the event date.