Trichocereus strigosus is one of the many species of Trichocereus native to Argentina. They have stems to 2 foot (60 cm) tall with 15-18 ribs, which are 3/16 of an inch (7 mm) thick. The cactus will form clumps up to 3 feet (1 m) across. The spines are needle shaped and are variable in length, 1/2 to 2 inches long (9 mm-5 cm) and in color. They are easy to culture.
Blooming: In late spring, the cactus blooms with up to 8 inch (20 cm) long white flowers. Very showy!
Culture: Trichocereus strigosus need full sun to light shade with a well-drained soil mix. In the greenhouse, we use a soil mix consisting of 2 equal parts of sand and loam. The plants are well watered and allowed to dry thoroughly before water is added again. We fertilize them once during the growing season. During the winter months, the plants are kept at 48°F (9° C) and watered only enough to keep the stems from shriveling.
Propagation: Trichocereus strigosus are propagates by cuttings, division of clumps, and from seed when available.
Trichocereus strigosus was featured as Plant of the Week May 13-19, 2005.
Guide to Past Plants-of-the-Week:
Cal's Plant of the Week was provided as a service by the University of Oklahoma Department of Microbiology & Plant Biology and specifically the late Cal Lemke, who used to be OU's botany greenhouse grower and an avid gardener at home as well. If the above links don't work, then try the overview site. You may also like to look at the thumbnail index. ©1998-2012 All rights reserved.