Camellia Festival: Descanso Gardens' annual show with sales and lectures at 1418 Descanso Drive, La Cañada Flintridge. (818) 949-4200 or http://www.descansogardens.org .
Pasadena Heritage Spring Home Tour: Tour of five privately owned historic homes in Pasadena. (626) 441-6333 or http://www.pasadenaheritage.org .
Lilac Festival: Show, sales and lectures. Late March or early April at Descanso Gardens. (818) 949-4200 or http://www.descansogardens.org.
Ikebana International Show: Japanese flower arranging. Los Angeles County Arboretum & Botanic Garden. (626) 821-4623 or http://www.arboretum.org .
AIA Home Tours: The L.A. office of the AIA hosts two tours a year: one in the spring and one in the fall. This month included a look at Beverly Hills homes; planned for the fall are a Sept. 17 tour of Silver Lake and Echo Park and a Westside tour Oct. 22. (213) 639-0777 or http://www.aialosangeles.org.
Theodore Payne Native Plant Garden Tour: Native gardens throughout the Los Angeles Basin. (818) 768-1802, or http://www.theodorepayne.org.
Open Days: Garden Conservancy's annual tour of gardens in the Los Angeles and Pasadena areas. Also in May. http://www.gardenconservancy.org/opendays/.
California Poppy Festival: Each year this festival spotlights the colorful poppies, which are an Antelope Valley springtime attraction. Lancaster City Park, 43011 N. 10th St. W., Lancaster. http://www.poppyfestival.com .
Bungalow Heaven Home Tour: Self-guided walking tour of historic Arts and Crafts-era homes in Pasadena's first landmark district. Today. (626) 585-2172 or http://www.bungalowheaven.org.
Garden tour: The Creative Arts Group's annual Art of the Garden tour through San Marino. (626) 355-8350 or http://www.creativeartsgroup.org.
Green Gardens Tour: The Virginia Avenue Project sponsors this tour of private gardens that have become ecologically sound. (310) 264-4224 or http://www.virginiaavenueproject.org.
Rose Show and Sale: Los Angeles County Arboretum & Botanic Garden. (626) 821-4623 or http://www.arboretum.org.