Courtesy of Darlene Kryza, Tucson Botanical Gardens “Terrestrial Orchid” by Manabu Saito “Terrestrial Orchid,” by Manabu Saito, is among the works on display at the Tucson Botanical Gardens’ Porter Hall Gallery, in a show continuing through March 30. The gallery, 2150 N. Alvernon Way, is open from 8:30 a.m. to 4:30 p.m. daily, excluding holidays.