All events are free unless otherwise indicated.

COMING UP

ADOPT-A-STREAM, coordinated effort using matting and native plants, to clean up Kawa Stream, Kane'ohe, by the Kailua Bay Advisory Council, Hui O Ko'olaupoko, and the city, 3-5 p.m. Dec. 9, meeting behind Bright Performance Arts Center, Castle High School (suggested: water, hat, sunscreen); supplies provided; 381-7202.

HAWAI'I ANIMAL SANCTUARY fundraiser, with buffet dinner, music and drinks; 6-9:30 p.m. Dec. 10, Hawai'i Yacht Club, Ala Wai Yacht Harbor; $30; reservations by Dec. 8, 395-0023

"SPIRAL HERB GARDEN," hands-on workshop, 1:30-3:30 p.m. Dec. 13, The Green House, 224 Pakohana St., Pauoa; $15; required reservations: 524-8427, www.thegreenhousehawaii.com.

HOME RAIN BARREL CATCHMENT SYSTEM WORKSHOP, taught by environmental engineer Jeremai Cann, 1:30-3:30 p.m. Dec. 13; The Green House, 224 Pakohana St., Pauoa Valley; $15; required registration, 524-8427, www.thegreenhousehawaii.com.

"GARDEN GREEN HOUR," outdoor green activities for families, 2:303:30 p.m. Dec. 10, Wahiawa Botanical Garden; 621-5463.

"ADVOCACY, PUBLIC POLICY AND FARM ANIMAL WELFARE in the Twenty-first Century," presentation, sponsored by the Vegetarian Society of Hawaii, by Wayne Pacelle,, president/CEO, The Humane Society of the United States, 7 p.m. Dec. 13, Ala Moana Beach Park, McCoy Pavilion; free; information, 944-8344.

FRIENDS OF HALEAKALA NATIONAL PARK ANNUAL CHRISTMAS TREE PULL, and effort to remove invasive pine trees (and gather Christmas decorating material) from Haleakala Ranch property, adjacent to the park, 9 am.-12 p.m. Dec. 13, gate is about 1/10 of a mile before park entry gate (suggested: close-toed shoes, gloves and handsaw); no registration needed; information, Matt, 808-876-1673.

KALIHI STREAM CLEANUP, "Second Saturdays for Sustainability" monthly restoration in and around Kalihi Stream; 8:30-11 a.m. Dec. 13; behind Kalihi Waena Elementary School, 1240 Gulick Ave. (covered shoes required); 853-2218, KAUPA@googlegroups.com.

HALEAKALA NATIVE FOREST PLANTING, organized by The Maui Dryland Forest Restoration Group; Dec. 13 ( hiking boots required; bring rain gear, 2 liters of water, lunch, sunscreen, hat); for details, times, exact location, 808-573-8989; registration: auwahi@yahoo.com; information, www.lhwrp.org.

O'AHU INVASIVE SPECIES COMMITTEE service project, an hour-one-way hike for advanced hikers, to remove the invasive Himalayan blackberry on the Mau'umae Trail, Dec. 13; details, starting location, time, 286-4616.

BE A GREENIE

FREE GARDEN MULCH, available 9 a.m.-3 p.m. Saturdays, Halawa Xeriscape Garden; self-service, bring containers and shovel; 748-5041, www.boardofwatersupply.com.

WEED AND POT CLUB: Maui Nui Botanical Garden's Weed & Pot Club meets 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; 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; volunteer@ntbg.org.

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

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.