Wildest Show in Town: AT&T presents the Ka'au Crater Boys, 6 p.m., Honolulu Zoo. Free admission from 4:35 p.m. Summer concert series continues Wednesdays through Aug. 28.
Orchid Society of Manoa: Jack W. Woltmon discusses the how's and why's of registering orchids, 7:30 p.m., Manoa Valley District Park. Call 537-3071.
UH-Manoa.
Music Break: Tropical Flame performs Polynesian music and dance, noon, Tamarind Park.
Hawaii Pacific University: Free seminar on travel industry management, 12:15 p.m. Call 544-0238.
Borders: Feng shui workshop with Phil Johnson, 7 p.m., Waikele. Learn about the Chinese art of placement for health, prosperity and good luck.
How to xeriscape: Class on starting a water-saving garden, 9 a.m. to noon, Halawa Xeriscape Garden, 99-1268 Iwaena St. Costs $2. Register at 527-6113.
Plant Discovery Walk: Featuring hibiscus, 9:30 to 11:30 a.m., Ho'omaluhia Botanical Garden, Kaneohe. Free. Reserve at 233-7323.
Organic gardening workshop: How to plan, mulch and plant a garden good for you and our Earth, 10 a.m. to noon, Hawai'i Nature Center. Costs $5. Reserve at 955-0100.
Borders: Soul/pop music by Gravity from the trio's self-titled CD, 2 p.m., Waikele.
Hawaiian music: Ka'ala Trio performs at Pearlridge Center, 3 p.m. Uptown Center Court, Phase I, and 4:30 p.m. Downtown, Phase II. SUNDAY 6/30
Hawaiian Chutzpah: Oahu Jewish Young Adult Group, ages 25 to 45, meets for dinner 6:30 p.m., San Francisco Sour Dough Pizza, Kailua. Call 944-3329.