NATIVE FOREST PLANTING — Join Maui Dryland Forest Restoration Group for restoration service trip, 8 a.m.-4 p.m. Saturday at Pu'u Makua; meet at 'Ulupalakua Ranch Store. Hiking boots required; bring rain gear, 2 liters of water, lunch, sunscreen, hat. Four-wheel-drive vehicles also needed. Register by e-mailing auwahi@yahoo.com or call 808-573-8989.

CRATER OVERNIGHTER — The Friends of Haleakala National Park will conduct a service trip Dec. 15-17 to plant native grasses, shrubs and trees as part of a restoration project. Accommodations at Kapalaoa Cabin. Call Farley Jacob at 808-248-7660.

LANIPO TRAIL CLEARING — Sierra Club and O'ahu Invasive Species Committee will be clearing Himalayan blackberry from Lanipo Trail on Dec. 8. Meet at 8 a.m. at Church of the Crossroads; bring hiking boots, long pants, rain jacket, water, lunch, hat, sunscreen. RSVP to 286-4616 or oisc@hawaii.edu.

WORM COMPOSTING — Learn the basics of vermicomposting at 9:30 a.m. Saturday at Christ Church Uniting, 1300 Kailua Road; and 1 p.m. Nov. 25 at Manoa Gardens Elderly Housing Community Center, 2790 Kahaloa Drive; $30 fee includes minibin, starter colony and manual. To register, call 382-0432 or e-mail waikikiworm@hawaii.rr.com.

BIRD BANDERS — Volunteers are needed to assist in bird banding and data collection to investigate malaria in native and introduced birds on O'ahu. Must be able to hike moderate distances and carry equipment. Contact Kira Krend at krend@hawaii.edu.

KA'ALA FARM SERVICE TRIP — Help the Board of Water Supply restore a native forest in Makaha by cutting down alien trees on Dec. 1. Meet at Church of the Crossroads at 7:30 a.m. or at entrance to the Wai'anae Boat Harbor at 8:15 a.m. Be prepared for 30-minute hike to service site; call Randy Ching at 942-0145.

SANDY BEACH CLEANUP — Join the Sierra Club from 8:30-10:30 a.m. Dec. 2 for one-mile highway and coastal cleanup. Bring closed-toe shoes, water, hat and sunscreen; bags, gloves provided. Signed waiver needed for children. Meet at Sandy Beach Park's east restroom. Call 394-2898.

Send listings to: For the Environment, P.O. Box 156, Wailuku, HI 96793; cwilson@honoluluadvertiser.com; or fax 808-242-1520.