The Plum Crazy is a cultivar of the hibiscus that is a hybrid plant. It was introduced by Lincoln, Nebraska's Fleming Brothers. It is typically used as a temporary hedge or a group planting as an accent to the landscape. 'Plum Crazy' hibiscus makes a very good border plant, water garden addition or hedge shrub.
A compact, shrubby perennial, the Plum Crazy hibiscus gets 3-4 feet tall and 2-4 feet wide with purple--green leaves. The leaves are large and lobed, looking similar to a maple leaf. Flowers are 7-8 inches wide and have five petals. Colors for the flowers include rose and purple, or a combination of those two hues. Flowers last a day but it will bloom for the summer to fall season, one blooming after another dies back.
Plant this particular cultivar of hibiscus in average to wet soil, with full sun to some shade tolerance. Best growth occurs in moist soil and full sun. Water deeply. Growth will be better if flowers are deadheaded (i.e., stems are cut back 4 inches in fall season). Fertilize according to package instructions regularly while in the growing season. This is a very low-maintenance shrub.
While hardy hibiscus plants are easily propagated via tip cutting, the Fleming Brothers have patented their Plum Crazy, and therefore propagation of this cultivar is restricted. Have one as a showpiece and plant other cultivars to propagate in the garden.
The Plum Crazy is hardy to USDA hardiness zones of 4 to 9. This incorporates temperature ranges from -30 degrees F to 30 degrees F. Cities in this range include Minneapolis, Des Moines, St. Louis, Dallas, and Oklahoma City. Check the USDA hardiness zone map if you are unaware of the zone you live in.
This particular cultivar will not have serious defects. It may fall prey to blight, rust, canker and leaf spots. If soil is dry, there may be leaf scorch. Insects that could damage this hibiscus are aphids, whiteflies and Japanese beetles. Always check the foliage for insect or disease damage.