All events are free unless otherwise indicated.

SPECIAL

HAWAI'I OCEAN GUARDIAN KID'S CLUB AND CONTEST, part of International Year of the Reef; contest open to students in grades K-8; enter by Aug. 29; www.sanctuaries.noaa.gov/education.

SAVING KIMO CONTEST, for keiki: grades K-5, a color drawing; grades 6-8, a color photograph or an essay; high school, two-minute video; enter by Sept. 30; info@diamondbakery.com.

COMING UP

OAHU HEALING GARDEN FESTIVAL, with workshops, cooking classes, tours and more, through Aug. 27; Waimea Valley, Honolulu, Waimanalo, Nu'uanu and Old Chinatown; 638-0888, www.HawaiiHealthGuide.com.

HAWAII AUDUBON SOCIETY FIELD TRIP; 8-10 a.m. Aug. 30; Paiko Lagoon; 864-8122.

WHO'S KEEPING HAWAI'I GREEN, an evening affair to celebrate those who are working to preserve Hawai'i's environment; 5:30-9 p.m. Sept. 18; Moanalua Gardens; $200; reservations: 386-2352.

BE A GREENIE

WAIMEA VALLEY GREETER; volunteers needed one day a week for 2 1/2 hours. Kelly Perry at 638-7766, ext. 203.

WEED & POT CLUB; Maui Nui Botanical Garden's Weed & Pot Club meets 8:30-10:30 a.m. Wednesdays at 150 Kanaloa Ave. in Kahului to perform beautification and maintenance work; tools, gloves and drinking water provided; wear shoes. 249-2798.

NATIONAL GARDEN HELP; protect rare plants and ecosystems by volunteering at National Tropical Botanical Garden, Kaua'i; help needed in administration, conservation, education, development and more. 808-332-7324, ext. 228, or volunteer@ntbg.org.

Niaulani nature walk, guided tour through an old-growth forest; 9:30 a.m. Mondays; meet at Volcano Art Center Niaulani Campus, Volcano Village; donations accepted; 808-967-8222, www.volcanoartcenter.org.

Niaulani Forest Work Day, volunteer to preserve the beauty and diversity of the rainforest; 9 a.m.-noon, third Sunday of each month; Volcano Art Center Niaulani Campus, Volcano Village; free; 808-967-8222.

Send announcements, with contact name and phone number, to: For the Environment, Island Life, The Advertiser, P.O. Box 3110, Honolulu, HI 96802; or islandlife@honoluluadvertiser.com, with "For the Environment" in the subject line. Deadline is 10 days before the event.