Combretum grandiflorum is a showy tropical vine that will reach 20 feet in the greenhouse setting. It is a native of Gambia, Guinea and Ghana in West Africa.
Blooming Time: Summer. The showy red flowers are 1 inch across and 1½ inch long. Panicles of flowers often reach 12 inches across in cultivation.
Culture: Combretum grandiflorum needs full sun to partial shade with intermediate to warm temperatures. In the greenhouse, we grow ours under 40% shade all year. The soil consists of 2 parts loam to 2 parts peat moss to 1 part sand. The soil should be kept moist at all times. Fertilize monthly during the growing season with a balanced fertilizer. Since the vines grow to 20 feet, they need a lot of room to grow. If the plant gets too large, it responds well to trimming to keep it at a manageable size. This is best done in late winter before new growth starts. Keep spent flowers trimmed off.
Propagation: Combretum grandiflorum is easily propagated from cuttings or by layering in early spring. It is easily started from seed. Seeds germinate in 7 to 21 days at 70 degrees.
Combretum grandiflorum was featured as Plant of the Week August 25-31, 2000.
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.