SPECIAL

PEARL CITY URBAN GARDEN ANNUAL PLANT AND PRODUCE SALE, and guided tours, free compost (with purchase); 9 a.m.-12 p.m. Feb. 14, at the garden; free; 453-6050.

"WHY CHARLES DARWIN WOULD HAVE LOVED HAWAI'I," speech by University of Hawai'i botany professor Mark Merlin and short garden tour, 9:30-11 a.m. Feb. 14, Lyon Arboretum, 3860 Manoa Rd.; $10; required registration, 988-0461; www.hawaii.edu/lyonarboretum.

"DR. HILLEBRAND" TOUR of the trees planted by the first gardener of Foster Botanical Garden, led by Liesel Vander Leeden; 1 p.m. Feb. 14; free with park admission: $5 general, $3 kama'aina, $1 ages 6-12; reservations: 522-7066.

MANOA HERITAGE CENTER DOCENT TRAINING CLASS, beginning March 16; 2859 Manoa Road; for times, reservations: 988-1287.

HONOLULU BOTANICAL GARDEN SYSTEM DOCENT CLASSES, 1-2:30 p.m. Tuesdays, through March 17, Foster Botanical Garden (classes require 25 hours of service); $25 refundable textbook fee; 522-7064.

ONGOING

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

LYON ARBORETUM classes for adults and children 3860 Manoa Road; full schedule at www.hawaii.edu/lyonarboretum; register: 988-0461.

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

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

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.

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.

"PLANTS OF PARADISE GARDEN TOUR," a tour of the museum gardens, 11:30 a.m. daily; Bishop Museum (meeting at Hawaiian Hall entrance); required museum admission; 847-3511.

GUIDED TOURS, view plants of the rain forest; 10 a.m. Mondays-Saturdays; Lyon Arboretum, Manoa Valley; $5; reservations: 988-0461.

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.

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

NATIONAL GARDEN HELP, volunteers needed to protect rare plants and ecosystems at National Tropical Botanical Garden, Kaua'i; 808-332-7324, ext. 228, or volunteer@ntbg.org.

SECOND SATURDAY AT THE GARDEN, stroll and learn about home gardening from certified Hawai'i master gardeners and Urban Garden Center volunteers; 9 a.m.-12 p.m. every second Saturday of the month; Pearl City Urban Garden Center; free; 453-6050, www.ctahr.hawaii.edu/ougc.

SELF-DIRECTED DRAWING AND PAINTING, rendering of plants, flowers and seed pods from the garden; 9-10 a.m. Wednesdays; Wahiawa Botanical Garden; reservations: 621-5463.

"NATURE SEEDLINGS PARENT/ CHILD PROGRAM," a mini-forest nature trail exploration for ages 3-5, followed by storytime and arts and crafts program, 10-11:30 a.m., first Sunday monthly, Hawai'i Nature Center; $20/non-member parent-and-child team; 955-0100.