* Plant an herb garden in a terra cotta pot as part of a class for parents and their children, 9:30 a.m. Saturday at Sherman Gardens, 2647 East Coast Highway, Corona del Mar. (949) 673-2261. Fee of $40 for one parent and child includes materials. Preregistration required.
* Seminar on topiary, by nursery owner Pat Hammer, and on attracting butterflies, by expert Marget Huffman, 10 a.m. Saturday at Descanso Gardens, 1418 Descanso Drive, La Canada Flintridge. (818) 952-4401; http://www.descanso.com . $25.
* Ethnobotany in the Garden will be the subject of a "Tour and Taste" evening July 26, with the tour and talk at 6 p.m., followed by a meal and wine-tasting at 7:30 p.m., at the Arboretum of Los Angeles County, 301 N. Baldwin Ave., Arcadia.(626) 821-3222. $35 with preregistration required.
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.