Common Name: rose of Sharon
Type: Deciduous shrub
Native Range: China to India
Zone: 5 to 8
Height: 8.00 to 12.00 feet
Spread: 6.00 to 10.00 feet
Bloom Time: June to October
Bloom Description: Pink with red eyes
Sun: Full sun to part shade
Suggested Use: Hedge, Naturalize
Tolerate: Deer, Drought, Clay Soil, Black Walnut
Easily grown in average, medium moisture, well-drained soils in full sun to part shade. Best flowering occurs in full sun. Prefers moist, organically rich soils, but tolerates poor soils and some drought. Very tolerant of summer heat and humidity. Generally tolerant of urban conditions. Prune to shape in spring. Pruning back to 2-3 buds in late winter may produce larger blooms. Easily propagated by stem cuttings. May be grown from seed, but seedlings may not have the exact same flower color as the parent. Species plants can self-seed aggressively in optimum growing conditions.
Hibiscus syriacus, commonly called rose of Sharon or shrub althea, is a vigorous, upright, vase-shaped, multi-stemmed, deciduous shrub that typically grows 8-12’ tall. It may be trained as a small tree or espalier. Showy, hollyhock-like, 5-petaled flowers (to 3” diameter) appear over a long, early-summer to fall bloom period. Each flower has a prominent and showy center staminal column. Palmately-veined, coarsely-toothed, three-lobed, medium green leaves (to 4” long) are attractive during the growing season but produce no fall color.
Genus name comes from the Latin and Greek names for the mallow.
Specific epithet suggests the plant comes from Syria which appears to be false because it is native to eastern Asia.
No serious insect or disease problems. Some susceptibility to leaf spots, blights, rusts and canker. Japanese beetles, whiteflies and aphids are occasional insect visitors. Japanese beetles can severely damage foliage if left unchecked.
Excellent flowering shrub that may be massed, planted in groups or used as a specimen. Good for foundations and shrub borders. Also can be effective as a hedge or screen.