Scabiosa caucasica 'Butterfly Blue' is a hybrid form of Scabiosa caucasica. It only reaches about 1 foot (30 cm) tall with a mounding habit. The finely cut leaves are dark green and will reach up to 4 inches (10 cm) in length. It grows very well in containers and in the landscape. They are hardy from USDA zones 4-9.
Blooming Time: From June to the first frost, the plants are covered in 2˝-3 inch (6.5-7.5 cm) flowers. The flowers are great for arrangements and have a very good vase life. Very showy!
Culture: Scabiosa caucasica 'Butterfly Blue' need a rich moist soil with full sun to partial shade. In the greenhouse, we a soil mix consisting of 2 parts peat moss to 2 parts loam to 1 part sand or perlite. The plants are kept moist for optimum growth and flowering. After flowering starts, the plants are fertilized weekly with a 15-30-15 fertilizer diluted to ˝ the strength recommended on the label. Plants grown in containers need to be divided every other year to keep them growing vigorously. When used in the landscape in zone 7, they require light shade in the hot afternoon sun. Clumps need to be divided about every 3 years or when they lose their vigor. In late September we start to subject the plants in containers to cooler night temperatures and restrict the watering somewhat. After the foliage dies back, plants are stored in cold storage at 40°F (5°C) until spring. At this time, plants are divided.
Propagation: Scabiosa caucasica 'Butterfly Blue' are propagated by cuttings, division or from seed.
Scabiosa caucasica 'Butterfly Blue' was featured as Plant of the Week April 2-8, 2004.
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. ©1998-2017 All rights reserved.