ARBOR DAY

HAWAIIAN ELECTRIC ARBOR DAY TREE GIVEAWAY, of 2,600 trees and shrubs, including patio plants, and flowering and shade trees (one-third of them fruit trees) at six Oahu sites Nov. 7 (experts on hand to help with selection/information): 7 a.m., HECO's Kahe Power Plant, Pearl City Urban Garden Center, HECO's Ward Avenue facility and HECO's Koolau Base Yard in Kailua; and 9 a.m., Wahiawä Botanical Garden and Waimea Valley; one tree per household; information, 543-4441, www.arbordayhawaii.org.

ARBOR DAY AT URBAN GARDEN CENTER, with tree give-away, mini plant sale, plant "clinic" and on-site certified arborist; 7-11:30 a.m. Nov. 7, University of Hawaii Urban Garden Center, 955 Kamehameha Highway, Pearl City; information, 453-6050.

WAIMEA VALLEY SECOND ANNUAL ARBOR DAY, with free giveaway (see above) of trees and mulch (bring bucket), and plant sale, including heliconias, gingers, bromeliads, hibiscus, exotics and anthuriums, herbs, orchids, vegetable starters and native ferns; 9 a.m.-1 p.m. Nov. 7, Parking Lot 2; free, $5 parking; information, 348-0057.

LANI-KAILUA OUTDOOR CIRCLE PLANT SALE, of ti, herbs, shrubs, vines and trees, to benefit the Women's Community Correctional Center; 8-10 a.m. Nov. 7, Kailua Elementary School; information, 263-4040.

KAPI'OLANI PARK ARBOR DAY PLANTING, sponsored by Scenic Hawaii, Kapiolani Park Preservation Society and city Department of Parks and Recreation, planting of nine ironwood trees, 9 a.m. Nov. 7; Kapiolani Park, mauka of the bandstand.

AMY B.H. GREENWELL ETHNOBOTANICAL GARDEN Arbor Day and Horticultural Festival, held in conjunction with annual free native plant giveaway, with cultural and scientific experts on hand to speak on the plants in the garden; 8:30 a.m.-12 p.m. Nov. 7; at the garden, Kailua, Kona, Big Island; information, 808-323-3318.

EVENTS

LYON ARBORETUM WORKDAY, weeding and garden maintenance with arboretum grounds crew, 8:30 a.m.-12 p.m. Nov. 7; information: 988-0455.

BOTANICAL ARTS: DRAWING IN THE GARDEN, drawing class for both beginners and advanced students; 9-11:30 a.m. Saturdays Nov. 7, 14 and 28; Lyon Arboretum, Mänoa; limited class size; $100; register, 988-0461, www.hawaii.edu/lyonarboretum.

HONOLULU ROSE SOCIETY'S fall rose show and contest; 10 a.m.-2 p.m. Nov. 7; Kahala Mall; also free rose care advice for the public (bring sample plants to help diagnosis); information, 545-5653.

"NATURE WRITING IN THE RAINFOREST," writing workshop with award-winning authors, teacher and biologist, Dorothy Hinshaw Patent, 10 a.m.-4 p.m. Nov. 7, Volcano Art Center, Niaulani Campus, Volcano Village, Big Island; all levels and genres of writing welcome; $60 (financial aid available); information, registration, 808-967-8222, www.volcanoartcenter.org.

"HOPS & HORT II," a leisurely afternoon hike through the arboretum — rain or shine — followed by a beer tasting; 4-6:30 p.m. Nov. 7, at the arboretum, 3860 Manoa Road; $28; register: 988-0461; www.hawaii.edu/lyonarboretum.

"VOLCANO PARK PLANTS: FROM THE BIGGEST TO THE SMALLEST," exploration with botanist Tim Tunison, of Hawaii Volcanoes National Park's plant life, from the rainforest to drier forest areas, from the smallest of moss and lichen to the largest flowering plants; 9:30 a.m.-3:30 p.m. Nov. 11, Hawaii Volcanoes National Park; $40, members; $55, nonmembers; information

"FLOWER ARRANGING: FALL COLORS ABOUND" one of the "Stepping Stones" class series, sponsored by Lyon Arboretum and Garden Club of Honolulu, hands-on flower arranging class, taught by Patsy Gibson, Garden Club of America flower judge emeritus; 9-11 a.m. Nov. 13, at the arboretum, 3860 Mänoa Road; $15 (plus $15 supplies fee); registration, 988-0461; www.hawaii.edu/lyonarboretum.

DR. HILLEBRAND TOUR of trees planted by the first gardener of Foster Botanical Garden, led by docent Liesel Vander Leeden; 1 p.m. Nov. 14 and Dec. 12; Foster Botanical Garden; requires park admission; reservations: 522-7066.

3-D FROGS AND GARDEN CRITTERS ART CONTEST, sponsored by Hoomaluhia Botanical Garden, open to the public in five age categories. Contest rules and registration available through Nov. 25 at the park; contest deadline, 4 p.m. Nov. 28. Entries will be displayed at the park visitor center Dec. 5-30. Information, 233-7323.

GARDEN GREEN HOUR, outdoor green activities for families, arranged as a respite from TV, computers and video games; 2-3 p.m. Dec. 23 and 30; free; Wahiawä Botanical Garden; 621-5463.

ONGOING

NIAULANI NATURE WALK, guided tour through an old-growth forest; 9:30 a.m. Mondays; Volcano Art Center's Niaulani campus, Volcano Village, Big Island; 808-967-8222, www.volcanoartcenter.org.

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

MÄNOA HERITAGE CENTER, discover an old Hawaiian heiau and native plants while learning Mänoa Valley's history; 9 a.m.-4 p.m. Tuesdays-Saturdays; Mänoa Heritage Center; $7 general, $4 seniors and military, students free; visits and tours by reservation only: 988-1287, www.manoaheritagecenter.org.

HOOMALUHIA PRE-SCHOOL NATURE HOUR (for ages 3-5) with stories, songs, crafts and nature hikes (optional picnic lunch); 10:30 a.m., third Tuesday monthly; from visitor's center (Nov. 17 topic, leaves; Dec. 15, bamboo); recommended: walking shoes, insect repellent, rain gear; information, 233-7323

WEED & POT CLUB at Maui Nui Botanical Garden 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; 808-249-2798.

BOTANICAL DRAWING AND PAINTING, rendering of plants, flowers, seeds and pods from the garden; 9:30 a.m.-noon Wednesdays, Hoomaluhia Botanical Garden, Käneohe; recommended: No. 4 round brush, Bristol paper, watercolor set or pencils; free; reservations, 233-7323.

SELF-DIRECTED BOTANICAL DRAWING AND PAINTING, rendering of plants, flowers, seeds and pods from the garden; 12:30-2 p.m. Wednesdays through Dec. 16, Wahiawä Botanical Garden; free; information/registration, 621-5463.

SECOND SATURDAY AT THE GARDEN, series of events offering a chance to stroll the garden and learn about tropical gardening from certified Hawaii master gardeners and center volunteers; 9 a.m.-12 p.m., second Saturday monthly; Pearl City Urban Garden Center; free; www.ctahr.hawaii.edu/ougc, 453-6055.

MAKIKI FOREST RESTORATION PROJECT, volunteers needed as part of Makiki Watershed Awareness Initiative forest restoration project, 9 a.m.-2 p.m. fourth Saturday of each month; 973-9782.

FREE GARDEN MULCH 9 a.m.-3 p.m. Saturdays, Hälawa Xeriscape Garden, 99-1269 Iwaena St.; self-service; www.boardofwatersupply.com, 748-5041.

HOOMALUHIA FAMILY CATCH AND RELEASE FISHING, 10 a.m.-2 p.m. Saturdays and Sundays, yearlong, Hoomaluhia Botanical Garden, Käneohe; recommended: walking shoes, insect repellent, rain protection, barbless hooks and fishing gear; free; reservations, 233-7323.

LYON ARBORETUM WORKDAY, weeding and garden maintenance with arboretum grounds crew, first Saturday monthly; times/information: 988-0455.

NIAULANI FOREST WORKDAY, volunteers needed, 9 a.m.-12 p.m., third Sunday of each month; Volcano Art Center, Niaulani campus, Volcano Village, Big Island; 808-967-8222.

WHAT'S BLOOMING/WHAT'S BEARING FRUIT WITH DAVID ORR, walking tour of Waimea Valley with botanical collections specialist David Orr, 2-3 p.m., first and third Sundays; recommended: snack, insect repellent, sunscreen, hat, water and sturdy shoes; free with paid park admission; reservations, 638-7766.

LYON ARBORETUM classes and workshops on invasive plants, organic gardening, traditional Hawaiian crafts, flower arranging, garden photography, field sketching and nature journaling, special children's classes and more, at the arboretum, 3860 Mänoa Road; schedule at www.hawaii.edu/lyonarboretum; register: 988-0461.

LYON ARBORETUM GUIDED TOURS, view plants of the rain forest, and tour the arboretum's Ethnobotany Garden, Spice Hill, native plant collection and waterfall; 10 a.m. Mondays-Saturdays; at the arboretum, Mänoa Valley; $5; reservations, 988-0461.

GARDEN TOUR, one-mile (1 1/2-hour) "easy" guided walk; 10:30 a.m. and 1 p.m. daily (keiki-focused tour at 1 p.m. Sundays); Senator Fong's Plantation and Gardens; $14.50, discounts for kamaäina; 239-6775.

"PLANTS OF PARADISE" GARDEN TOUR of the Bishop Museum gardens, 11 a.m. daily; meet at Hawaiian Hall entrance; museum admission required; 847-3511.

FOSTER BOTANICAL GARDEN seeks volunteers to help maintain butterfly garden, including ongoing deadheading, replanting and general maintenance; 373-4200.

KAUAI BOTANICAL GARDEN,'volunteers needed to protect rare plants and ecosystems at the National Tropical Botanical Garden, Kauai; 808-332-7324, ext. 228, or volunteer@ntbg.org.