EVENTS

LYON ARBORETUM ANNUAL PLANT SALE, including sale of herbs, exotic fruit trees, roses, orchids, gingers, heliconia, bromeliads, native Hawaiian plants, flowering trees, ti, water lilies, succulents, hibiscus, lānai and landscape plants, and haku lei, jams and jellies and crafts; opportunity to talk to a "Plant Doctor," and keiki activities, 9 a.m.-2 p.m. April 10, Blaisdell Center Exhibition Hall; $2; information, 988-0456, or www.hawaii.edu/lyonarboretum.

SECOND SATURDAY AT THE GARDEN, focusing on tomatoes, one of a series of events offering a chance to stroll the garden and learn about tropical gardening from certified Hawai'i master gardeners and center volunteers; 9 a.m.-noon (special tomato classes 9 a.m. and 10:30 a.m.) April 10; Pearl City Urban Garden Center; free; www.ctahr.hawaii.edu/ougc, 453-6055.

WORM WORKSHOP and tour, sponsored by city Board of Water Supply, on using worms to help make organic waste become garden compost, 10 a.m.-noon April 10, Hālawa Xeriscape Garden; $30 (includes a mini-bin, worm starter colony and manual) registration, 945-9676.

LAUHALA TURTLE-MAKING CLASS, 9:30 a.m.-2 p.m. Wednesdays, through May 26, Foster Botanical Gardens; $10 (plus garden admission); reservations: 522-7064.

PLANT PROPAGATION class, through the use of cuttings, divisions and air layering, 9-10 a.m. April 15, Ho'omaluhia Botanical Garden; reservations required, 233-7323.

ONGOING

NIAULANI NATURE WALK, guided tour through an old-growth forest; 9:30 a.m. Mondays; Volcano Art Center's Niaulani campus, Volcano Village, Big Island; 808-967-8222, www.volcanoartcenter.org.

TUESDAYS AT KANAHĀ, weekly beach cleanup and plant maintenance, coordinated by Community Pride at Kanahā Beach Park, Maui, 8-10 a.m. Tuesdays, at the park; Valerie Vines Magee, 808-264-1454.

MĀNOA HERITAGE CENTER, discover an old Hawaiian heiau and native plants while learning Mānoa Valley's history; 9 a.m.-4 p.m. Tuesdays-Saturdays; Mānoa Heritage Center; $7 general, $4 seniors and military, students free; visits and tours by reservation only: 988-1287, www.manoaheritagecenter.org.

HO'OMALUHIA PRESCHOOL NATURE HOUR (for ages 3-5) with stories, songs, crafts and nature hikes (optional picnic lunch); 10:30 a.m., third Tuesday monthly; from visitor center; recommended: walking shoes, insect repellent, rain gear; information, 233-7323

WEED & POT CLUB at Maui Nui Botanical Garden, 8:30-10:30 a.m. Wednesdays, 150 Kanaloa Ave., Kahului, Maui, to do beautification and maintenance work; tools, gloves, drinking water provided; wear shoes; 808-249-2798.

BOTANICAL DRAWING AND PAINTING, rendering of plants, flowers, seeds and pods from the garden; 9:30 a.m.-noon Wednesdays, Ho'omaluhia Botanical Garden, Kāne'ohe; recommended: No. 4 round brush, Bristol paper, watercolor set or pencils; free; reservations, 233-7323.

MAKIKI FOREST RESTORATION PROJECT, volunteers needed for Makiki Watershed Awareness Initiative forest restoration, 9 a.m.-2 p.m. fourth Saturday of each month; weed, pick up branches, plant, water and fertilize; wear long pants, long sleeves, shoes or boots, gloves, insect repellent and bring water and lunch; meet at Makiki forestry base yard above new Hawaii Nature Center; 973-9782.

FREE GARDEN MULCH, 9 a.m.-3 p.m. Saturdays, Hālawa Xeriscape Garden, 99-1269 Iwaena St.; www.boardofwatersupply.com, 748-5041.

HO'OMALUHIA FAMILY CATCH AND RELEASE FISHING, 10 a.m.-2 p.m. Saturdays and Sundays, yearlong, Ho'omaluhia Botanical Garden, Kāne'ohe; recommended: walking shoes, insect repellent, rain protection, barbless hooks and fishing gear; free; reservations, 233-7323.

LYON ARBORETUM WORKDAY, weeding and garden maintenance with arboretum grounds crew, first Saturday monthly; information: 988-0456.

Send announcements, at least 10 days before event, with contact name and phone number, to: Island Life, Garden Calendar, The Advertiser, 605 Kapi'olani Blvd., Honolulu, HI 96813; islandlife@honoluluadvertiser.com, with "Garden Cal" in the subject line; or fax 525-8055.