For a comprehensive listing, see www.honoluluadvertiser.com/islandlife.

SPECIAL

"COOKING REVELATIONS WITH RAUL: FRUTTI DI MARE," seafood and spring vegetable cooking class using fresh, locally grown garden ingredients, with chef Raul Bernal; 9 a.m.-12 p.m. March 21; The Green House, 224 Pakohana St., Pauoa Valley; $35; registration, 524-8427, www.thegreenhousehawaii.com.

55th KUNIA ORCHID SHOW, including display, competition, store with orchid-growing accessories, door prizes and more; 9 a.m.-5 p.m. March 21 and 9 a.m.-4 p.m. March 22; Leilehua High School auditorium; $2; 623-8585.

GARDEN TOUR AND WORM WORKSHOP on using worms to fertilize plants, cut down on household waste and conserve water, hosted by the Board of Water Supply and Waikiki Worm Co.; 9:40 a.m. tour, 10 a.m. workshop March 21; Halawa Xeriscape Garden, 99-1268 Iwa'ena St.; $30 (includes mini-bin, starter worm colony and instructions); brown-bag lunch welcome; register: 382-0432, wakikiworm@hawaii.rr.com.

MEDICINAL PLANTS TOUR of Foster Botanical Garden, led by Wayne Wong; 1 p.m. March 21; requires park admission, $3-$5; register, 522-7066.

"THE ART OF COMPOST TEA," one of a series of University of Hawai'i Outreach College noncredit workshops for home and garden; 3-4:30 p.m. March 22; Olomana Gardens, Waimanalo; $20; registration/directions, 956-8400, www.outreach.hawaii.edu/noncredit.

"SPLENDORS OF IKEBANA," annual exhibition of the member works of seven schools, presented by Ikebana International Honolulu chapter; 8 a.m.-4:30 p.m. March 23-27; Honolulu Hale courtyard (demonstrations 10-11 a.m. March 24 and 26); free; 768-6622.

"BOTANY FOR GARDENERS" class, led by city botanical gardens botanist Naomi Hoffman; 10-11 a.m. March 24; Foster Botanical Garden; garden admission required ($3 residents, $5 visitors); reservations: 522-7074.

PLANT DOCTOR, bring in a photo or description of your sick plant or tree for a diagnosis; 9-10 a.m. March 27; Wahiawa Botanical Garden; free; reservations: 621-5463.

ANNUAL SPRING FANTASY ORCHID SHOW, by Garden Island Orchid Society, with orchids, crafts and food; 1-8 p.m. March 27 and 9 a.m.-4 p.m. March 28; United Church of Christ, Hanapepe, Kaua'i; free; 808-742-0333, www.gardenislandorchidsociety.org,

"DECORATE AN EGG, THE XERISCAPE WAY," workshop hosted by the Honolulu Board of Water Supply for keiki ages 2-12 and parents with Easter egg hunt to follow; 10 a.m.-1 p.m. April 4; Halawa Xeriscape Garden; $5 per family; register by April 2: 748-5319.

HO'OMALUHIA SPRING PRESCHOOL ACTIVITIES; 10:30 a.m. April 21 (spiders) and May 19 (bees); with story and song time, crafts and short hike. Recommended items to bring: picnic lunch, rain, mud and mosquito precautions, and covered shoes; free; 233-7323.