Garden Calendar

The big fall native plant sale, Saturday, 11 a.m.-4 p.m., and Sunday, 9 a.m.-1 p.m., at Rancho Santa Ana Botanic Garden, 1500 N. College Ave., Claremont, (909) 626-1917 (https://www.rsabg.org). Free. There will also be book signings by salvia expert Betsy Clebsch and garden designer Bob Perry.

* Japanese Festival, with a spectacular autumn chrysanthemum show, suiseki (display of stones) and cultural events, Saturday and Sunday, 9 a.m.-4 p.m., with a special guided walk on Japanese garden design, Saturday at 10 a.m., at Descanso Gardens, 1418 Descanso Drive, La Canada Flintridge, (818) 952-4401; https://www.descanso.com.

* Fall Orchid Festival, with displays and plants for sale, Saturday and Sunday, 10 a.m.-3 p.m., at UC Irvine Arboretum, Campus Drive and Jamboree Road, Irvine, (949) 824-5833. $2.

* Talk on controlling pests without pesticides, followed by a plant sale, Thursday, 2:30 p.m., at Huntington Botanical Gardens, 1151 Oxford Road, San Marino, (626) 405-2141; https://www.huntington.org. No admission fee to talk or sale; $8.50 to visit gardens.

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.