Rose of Sharon Types

Rose-of-Sharon (Hibiscus syriacus), also known as shrub althaea, is a hardy hibiscus. Unlike Hibiscus rosa-sinensis, which is cold hardy only to USDA Zone 8b, Rose-of-Sharon grows in Zones 5 through 9. Grow Rose-of-Sharon in full sun or very light shade in nutrient-rich, well-drained soil. Prune often to achieve fewer, larger blooms and prune little or not at all to produce many smaller blooms, according to University of Florida/U.S. Forest Service extension literature.

Admiral Dewey

H. syriacus cv. Admiral Dewey flowers are single, white blooms. Admiral Dewey blooms from middle to late summer to early fall.


H. syriacus cv. Ardens is a semi-double flowering rose of Sharon with light purple blooms. It produces blossoms late in summer. Ardens reaches a height of eight to 12 feet with six- to 10-foot spread.

Blue Bird

H. Syriacus cv. Blue Bird has large, single, pale-blue flowers. Blue Bird's flowers have a dark magenta eye (center). Blue Bird blooms from middle summer through early fall. Blue Bird grows six to eight feet tall with six-foot spread.


H. Syriacus cv. Diana is a rose of Sharon with large white flowers that remain open at night, unlike other cultivars. Diana is a heavy bloomer. Diana reaches a height of 10 feet with six-foot spread.


H. syriacus cv. Aphrodite has pink-mauve, single blooms with dark magenta eyes. Aphrodite blooms from summer through early fall. Aphrodite reaches a height of eight to 10 feet with a six- to eight-foot spread.

Red Heart

H. syriacus cv. Red Heart Rose-of-Sharon produces single, white flowers with scarlet eyes. Red Heart reaches a height of eight to 12 feet with six to 10-foot spread. Red Heart bears flowers from late summer through early fall.


H. syriacus cv. Minerva is a pink flowering Rose-of-Sharon that grows to 10 feet tall with six-foot spread. Minerva blooms from middle to late summer through early fall.

Keywords: rose of sharon, hibiscus syriacus, hardy hibiscus

About this Author

Marie Roberts is a freelance writer based in north central Florida. She has a B.S. in horticultural sciences from the University of Florida. Roberts began writing in 2002 and is published in the "Proceedings of the Florida State Horticultural Society."