All events are free unless otherwise indicated.

COMING UP

BIODYNAMIC/INTUITIVE GARDENING WORKSHOP SERIES, on interacting more fully with plants and nature (including using homeopathic sprays), 7:30-9 p.m. April 14, Kahumana Community Center and Farm, Wai'anae; free (also dinner, 6 p.m., $12); directions/reservations, 696-2655.

"SYNTHETIC SEA STORY," one of a series of "Plastic and Hawai'i's Marine Life" lectures and films, organized by the Beach Environmental Awareness Campaign Hawai'i; 6:30 p.m. April 15, University of Hawai'i-Manoa, Art Building auditorium; 393-2168, www.b-e-a-c-h.org.

"CARING FOR STATE LANDS," one of a series of April lectures, sponsored by the UH Sea Grant, Hanauma Bay Education Program, exploring Hawai'i environmental stewardship programs; 6:30 p.m. April 16, Hanauma Bay Education Center theater; free (free parking after 5:30 p.m.); 397-5840.

"COOKING REVELATIONS WITH RAUL," Mexican cooking class on using locally-grown fresh ingredients; 9 a.m.-12 p.m. April 18, The Green House, Pauoa Valley; $25; required registration, 524-8427, http://www.thegreenhousehawaii.com.

NAWILIWILI HARBOR EARTH DAY CLEAN-UP, co-sponsored by Surfrider Foundation, Nawiliwili Yacht Club, Sierra Club, Coast Guard and the state Division of Boating and Recreation; 9 a.m. April 18, from yacht club; trash bags and gloves provided, bring sunscreen, hat and water; Barbara, 635-2593.

WATER GARDENS WORKSHOP with Kevin Mulkern; 9:30-11:30 a.m. April 18, Lyon Arboretum, Manoa; $15; reservations: 988-0461.

TURNING CYCLING TRASH TO TREASURE, the Island Triathlon and Bike Cycle Swap, with sale of gently used bikes, training gear and other triathlon-related products; 9:30 a.m.-1:30 p.m. April 18, St. Mark's Church, Kapahulu; small entry commission fee; 732-7227; www.itbhawaii.com.

"ACTING GREEN!," an eight-week, theater basics for kids workshop series (ages 5 and up), focused on green story themes and costuming; 1-2 p.m. Saturdays, April 18-June 6; The Green House, Pauoa Valley; $100; required registration, 524-8427, http://www.thegreenhousehawaii.com.

"GROW YOUR OWN PROBIOTIC MEDICINE: KOMBUCHA," a workshop by herbalist and ethnobotanist Laura Shiels on growing and using the symbiotic organism kombucha; 1:30-3:30 p.m. April 18, The Green House, Pauoa Valley; $15; required registration, 524-8427, http://www.thegreenhousehawaii.com.

"PERMACULTURE IN HAWAI'I," workshop on reducing and recycling waste in agricultural applications, one of a series of UH Outreach College noncredit workshops for home and garden; 3-4:30 p.m. April 19, Olomana Gardens, Waimanalo; $20; registration/directions, 956-8400, www.outreach.hawaii.edu/noncredit.

HO'OMALUHIA BOTANICAL GARDEN SPRING PRESCHOOL ACTIVITIES, 10:30 a.m. April 21 (spiders) and May 19 (bees); with story and song time, crafts and short hike. Recommended items: rain, mud and mosquito precautions, picnic lunch and covered shoes; free; 233-7323.

"ECO-FAITH: CREATING AND SUSTAINING GREEN CONGREGATIONS," a user-friendly guide for pastors, church leaders, congregations and individuals, by local psychologist Charlene Hosenfeld,; available late April at local bookstores, or from The Pilgrim Press, 800-537-3394.

BE A GREENIE

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

WAIMEA VALLEY GREETER, volunteers needed one day a week for 2 1/2 hours; 638-7733.

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, volunteers needed to protect rare plants and ecosystems at National Tropical Botanical Garden, Kaua'i; help needed in administration, conservation, education, development, etc.; 808-332-7324, ext. 228, or volunteer@ntbg.org.

Niaulani nature walk, guided tour through an old-growth forest; 9:30 a.m. Mondays; from Volcano Art Center, Niaulani campus, Volcano Village, Big Island; 808-967-8222, www.volcanoartcenter.org.

Niaulani Forest WorkDay, volunteers needed to preserve the rainforest; 9 a.m.-12 p.m. third Sunday of each month; Volcano Art Center, Niaulani campus, Volcano Village, Big Island; 808-967-8222.

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.

CHUN'S REEF BEACH /COASTCLEANUP by Adopt-A-Beach Hawaii and Save The Sea Turtles International; 12 p.m. last Saturday monthly, from 61-529 Kamehameha Highway, Hale'iwa; trash bag, gloves and purified water provided; bring hat, sunscreen and beach shoes; 637-2211.

MAKIKI FOREST RESTORATION PROJECT, volunteers needed to weed, pick up branches and plant, water and fertilize native plants as part of Makiki Watershed Awareness Initiative forest restoration project; 9 a.m.-2 p.m. fourth Saturday of each month; 973-9782.