Hibiscus syriacus ‘Speciosus’ or Rose of Sharon is a deciduous shrub. It is native to South Central and Southeast China. The Latin name syriacus is due to the fact that it was collected from the gardens in Syria. It is also known as Korean Rose, Syrian Ketmia, Shrub Althea, Rose Mallow. Hibiscus syriacus ‘Speciosus’ is the national flower of South Korea, it is used in the national emblems and mentioned in the national anthem.
Hibiscus syriacus ‘Speciosus’ is a hardy shrub and grows from 2 to 4m or 7 to 13ft. The flowers are trumpet-shaped and a yellow-tipped stamen, they appear in summer and autumn. The colors of the flowers range from white to pink. It has yellowish-green leaves, alternate and ovate. The branches are grayish. Both the leaves and the flowers were traditionally consumed in Korea.
Plant Hibiscus syriacus ‘Speciosus’ in moist but well-drained soil in the sun or partial shade but sheltered from elements. Propagate from seeds, cuttings or layering. Watch out for leaf spots, canker, Japanese beetles, whiteflies, and aphids.