Bishop Museum offers a Big Island excursion to the 5th Annual Grow Hawaiian Festival at Amy B.H. Greenwell Ethnobotanical Garden.

Feb. 27-March 1. The cost is $950 per person, double occupancy; $1,050 per person, single occupancy. Cost includes Big Island transportation, resort accommodations at Outrigger Keauhou Beach Resort, and most meals; $500 of the cost is a tax-deductible contribution to Bishop Museum to help support its educational programming. Air travel and transportation to and from the hotel not included.

Full itinerary at www.bishopmuseum.org; reservations: 848-4187 or e-mail courtney.chow@bishopmuseum.org.

Voluntourism discount: The Dragonfly Ranch, a treehouse-like getaway near Pu'uhonua O Honaunau National Historical Park, invites travelers wishing to contribute an hour a day to the national park or the Dragonfly's organic garden to stay for a 10 percent discount. 808-328-2159, www.dragonflyranch.com.