Chrysanthemum multicaule, a native of Algeria, is an annual mum that we grow for IPM experiments in ecology class. Its size ( 12 inches max) and blooming in 12 weeks from seed makes it an excellent plant for teaching. I have grown it outside in zone 7; it reseeds itself well and blooms earlier than most mums. It is an excellent plant for borders.
Blooming Time: Mid-spring to early summer. The yellow blooms are 1½ inches across.
Culture: Chrysanthemum multicaule need full sun to light shade with cool to intermediate temperatures. In the greenhouse, we grow them in 4-inch pots for classes. Even with the small pot size, plants will still get to 12 inches tall. We use a soil mix consisting of 2 parts peat moss to 2 parts loam to 1 part sand or perlite. To each 0.01 cubic yard, we add 1 cup of hydrated lime, 1 Tbs of micronutrients and 2 cups 14-14-14 slow release fertilizer. The plants are kept moist for optimum growth. Plants are grown with 55° nights and day temps in the mid 70's. Plants from seed will bloom in 12 weeks at these temperatures. One must bear in mind that aphids love this plant, which is why we use it for IPM experiments.
Propagation: Chrysanthemum multicaule is easily started from seed in pots or outside where they are to grow.
Chrysanthemum multicaule was featured as Plant of the Week January 19-25, 2001.
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.