HILO COMPUCYCLE — Drop off old computers, stereos, TVs, copiers and other electronics 10 a.m.-2 p.m. Friday at Kawamoto Swim Stadium (for government and public agencies) and May 26 at UH-Hilo near theater (for public). Call (808) 961-8549.

MONTHLY WEED PULL — Help remove false kava (piper auritum) from a stream bed in 'Ahuimanu, 8 a.m.-3 p.m. Saturday. Meet at Church of the Crossroads parking lot behind 1212 University Ave. Bring lunch, water, sturdy walking shoes, rain jacket, sunscreen and mosquito repellent. Sign up at 286-4616 or oisc@hawaii.edu.

KA'ALA FARM WORKDAY — Help a forest restoration project clear invasive species and replant native ones, 9 a.m.-2 p.m. Saturday. Bring closed-toe shoes, water, lunch, long pants, hat and bug spray. Limited space; call Kina or Jody at 696-4954

MAUI NATIVE FOREST PLANTING — Planting trip Saturday; meet at 'Ulupalakua Ranch Store. Hiking boots required; bring rain gear, 2 liters water, lunch, sunscreen, hat. Register: auwahi@yahoo.com or (808) 572-4471.

KANE'OHE WETLAND PROJECT — Help the Hawai'i Audubon Society remove invasive weeds, 8 a.m.-noon May 19 at the Kane'ohe Marine base. Register by May 14 at 254-2736.

WORM COMPOSTING — Learn the basics of vermicomposting at 1 p.m. May 20 at Manoa Gardens Elderly Housing Community Center; $30, includes mini bin, starter colony and manual. Call 382-0432 or e-mail waikikiworm@hawaii.rr.com.

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