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| Common Name Althea, Rose of Sharon, This pic – “Blue Angel” | Common Name Althea, Rose of Sharon, This pic – “White Angel” | |
| Biological Name,Hibiscus syriacus ‘Greba’ | Biological Name, Hibiscus syriacus ‘Grewa’ |
| Common Name Type Family Native Range Zone Height Spread Bloom Time Bloom Description Sun Water Maintenance Suggested Use Flower Attracts Tolerate |
Rose of Sharon, Althea Deciduous shrub Malvaceae China to India 5 to 8 8.00 to 12.00 feet 6.00 to 10.00 feet June to October Pink with red eyes Full sun to part shade Medium Low Hedge, Naturalize Showy Butterflies 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. Noteworthy Characteristics 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 is the old Greek and Latin name for mallow. Specific epithet suggests the plant comes from Syria which appears to be false because it is native to eastern Asia. |
| Information on this page is generally from Missouri Botanical Gardens, Dave’s Garden, All things Plants or Texas Superstar |
This page last updated or reviewed 210721
