Hosta 'Powder Blue' is an herbaceous perennial with its origins in Northeast Asia. Hostas in general have about 35-45 true species and some 2500 cultivars. 'Power Blue' is just one of these cultivars. They are a slow-growing Hosta with glaucous powdery blue foliage. Leaves will reach up to 14 inches (35.5 cm) long by 11 inches (28 cm) wide. When mature the mounds will reach 28 inches (0.7 m) tall with a spread of 60 inches (~1.5 m) wide. Since my yard is very shady we grow about 12 cultivars of Hostas. Since this cultivar is slug resistant it is a plus in Hosta beds. Slugs can be a very big problem. Hostas are of easy culture and make outstanding plants for the shady landscape. They are hardy in USDA zones 3-8.
Blooming: Hosta 'Powder Blue' blooms in late June into July with lavender flowers and 30-36 inch (75-90 cm) scapes.
Culture: Hosta 'Powder Blue' needs partial shade to full shade with a moist rich soil. In my yard, we amended the soil with sand and peat moss to break up the red clay soil. This was done to a depth of 12 inches (30 cm). Plants are mulched to combat our drying hot winds here in central Oklahoma. The beds are kept moist and fertilized monthly. To combat the slug problem we leave shallow containers of beer out for the slugs. Once the foliage dies back in fall we cut of all dead leaf material.
Propagation: Hosta 'Powder Blue' is propagated by division.
Hosta 'Powder Blue' was featured as Plant of the Week June 10-23, 2011.
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.