CRATER OVERNIGHTER — The Friends of Haleakala National Park will conduct cabin maintenance, invasive species removal or other work during Feb. 16-18 service trip to Kapalaoa Cabin. Before signing up, go to www.fhnp.org, create an account, log into the account to learn more and certify your readiness for service trips. For reservations, call Farley at 808-248-7660 or Matt at 808-876-1673.

KAWAI NUI QUICKIE — Windward Ahupua'a Alliance will hold a Quick-n-Dirty Cleanup of Kawai Nui waterway and Hamakua Marsh 12:30-2 p.m. Feb. 17, with a pau hana party to follow. Pre-registration not required. Call Jim or Shannon Wood at 223-4481 or 247-6366, ext. 1.

MAKIKI WAI HELPERS — The O'ahu Na Ala Hele Trails and Access program and the Hawai'i Nature Center need volunteers from 9 a.m.-2 p.m. Feb. 23 to weed, pick up branches, plant, water and fertilize native plants as part of the Makiki WAI (Watershed Awareness Initiative) forest restoration project. Bring long pants, long-sleeved shirt, shoes or boots, gloves, insect repellent, water and lunch. Meet at the Makiki Forestry Baseyard; families welcome. Call Aaron Lowe at 973-9782.

OPERATION POLIHALE — The Division of State Parks and Leadership Kaua'i welcome volunteers to work with Pi'ina Hoku youth program in Operation Polihale from 8 a.m.-noon March 8 and April 12. Work includes cleanup, plant trimming, fixture repairs, painting, replacement of vehicle barriers at Polihale State Park. Contact Leadership Kaua'i at 808-246-8727.

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 weed, rake, trim or transplant nursery plants, and perform other beautification and maintenance work. Tools, gloves and drinking water provided; bring sunscreen, wear shoes.

THURSDAY WORKDAYS — Join the Nature Conservancy 8 a.m.-4 p.m. Thursdays at the Honouliuli Preserve in Kunia for volunteer work trips requiring hiking and moderately strenuous activity removing invasive species, clearing trails, monitoring and repairing fences. Meet at Kunia base yard. Contact Lynette Williams at lynette_williams@tnc.org or call 621-2008.