Growing a ‘Rose of Sharon’ bush (Althea) is the easiest way to fill your yard with season-long color. Hummingbirds & butterflies are drawn to its superb display; an added benefit of having this exceptional shrub for your yard. These lovely double, pastel-pink blooms are 3-5″ in diameter, plus they flower in late summer to fall when few other shrubs are in bloom. This bush is a cold hardy hibiscus commonly grown in Zones 5-9. It is a substantial garden plant growing to 10-12 feet tall and about 6 feet wide. Best to give it plenty of room to grow, as it looks the best when growing to its natural size.
When the bush is young, it’s more upright and compact, but spreads and opens as it ages. An Althea bush makes an excellent single specimen in the landscape or grouped together in a mass planting. Since an Althea bush blooms on new wood, prune it each year before new growth begins in the late winter or early spring to keep the shrub tidy and blooming well. This is a very rugged, maintenance-free plant that will do well in poor soil, extreme heat, and drought. It is a deciduous shrub.