related issue Yellowing leaves on a rose of Sharon Hibiscus syriacus may be. Some gardeners opt to grow them as perennials by cutting he plant back every year or two. Double Purple Rose of Sharon Tree Why Are My Rose Leaves Turning Yellow. Blooms attract numerous bees and butterflies. Japanese beetles may mar the flowers for a few weeks in early summer, but shrubs generally rapidly recover.Īfter their first year, Rose of Sharons are highly drought tolerant. Shrubs respond well to annual pruning and to severe “rejuvenating” by pruning to a few inches above the ground. Hibiscus syriacus is the only species from this plant family that is. For maximum flowering, site plants where they receive 6 or more hours of direct sun and feed annually with a slow-release fertilizer such as Osmocote™ or Nutricote™. The garden hibiscus (Hibiscus syriacus) or althea shrub according to its former. They grow in average to good garden soils with moderate drainage. Tree Name Rose of Sharon (aka Giant Hibiscus or Shrub Althea) Scientific Name/Species Hibiscus. Rose of Sharons are available in a wide range of flower colors including pink, purple, blue, white, and almost red. Blooms may be single, semi-double, and double and range in size from 2-5 inches across. Hardy giant hibiscus flowering with purple bloom. New cultivars strut variegated foliage, double flowers, and infertile (sterile) blooms that produce little or no seed. However, old fashioned varieties frequently reseeded around the garden. Cooperative Extension Service Horticulture Landscape Shrubs Althea, Rose-of-Sharon Hibiscus syriacus Plant Database. At one time, it was a great pass-along shrub that fell out of favor. This summer flowering shrub is exceptionally easy to grow.
Rose of Sharon, aka shrub althea, ( Hibiscus syriacus) is a woody hibiscus shrub that is hardy in temperate northern areas of the U.S.
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