Cacti and succulents
Native to Ariazona and Mexico. Columnar cactus branching from base (also from top, if injured) to form a clump to 12 ft. wide. Dark green or gray-green stems grow quite slowly to 15 to 20 ft. tall; each stem reaches 6 in. thick, has 12–19 ribs, and is covered with black spines 1/2 to 1 in. long. In old plants, clump may contain 30 or more stems of varying heights; the arrangement is said to resemble a pipe organ. Blooms from mid to late spring; funnel-shaped, 3-in. flowers in white with a touch of pink to reddish purple open at night. Rounded, 1/2 -in.-long fruits are olive green, becoming red tinged when ripe. They split open to reveal edible, sweet, bright red pulp with black seeds. Needs excellent drainage.