Garden Calendar

* Talk on “Are Your Roses Ready to Go?” by expert Donald Trotter, today, 7-9 p.m., at Quail Gardens, 230 Quail Gardens Drive, Encinitas, (760) 436-3036. $10.

* Class on home vegetable gardening, Saturday, 9 a.m.-noon, at Cal State Northridge, 18111 Nordhoff St., Northridge, (818) 677-4607. $45, with registration required.

* Talk on the art of topiary, by expert Janelle Wiley, Saturday, 10-11 a.m., at the Fullerton Arboretum, Associated Road at Yorba Linda Boulevard, Fullerton, (714) 278-3579. $7 per household.

* The “Bonsai-a-Thon” will have bonsai demonstrations by experts, auctions, a “Bonsai Bazaar,” tours and a special display of trees, Saturday and Sunday, 10:30 a.m.-4:30 p.m., at the Huntington Library and Botanical Gardens, 1151 Oxford Road, San Marino, (626) 405-2141, https://www.huntington.org. $8.50.

* The Camellia Festival celebrates the peak bloom in the 50,000-plant camellia forest this weekend, with a show of cut blossoms, Saturday, 1-4:30 p.m., and Sunday, 9 a.m.- 4 p.m., plus guided walks each day at 2:30 p.m. and a pruning demonstration at 1 p.m. Sunday, at Descanso Gardens, 1418 Descanso Drive, La Canada Flintridge, (818) 952-4401; https://www.descanso.com. $5.

* The “Open Days Directory” for 2001 lists some of America’s best gardens and the days they will be open to the public to benefit the Garden Conservancy. Several areas of California will have these “Open Days,” as do most states. The directory costs $15.95 and may be ordered by calling (888) 842-2442.

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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.