Rose of Sharon is a hardy deciduous shrub (not a tree) grown for its long summer display of large trumpet-shaped flowers. It is tough and adaptable, but flowers best in full sun and well-drained soil.
Family
Malvaceae (Mallow family)
Grows as
Shrub
Light
Full sun
Water
Water regularly in the first year and during dry spells; established plants tolerate drought.
Soil
Moist but well-drained, organically rich, neutral soil.
Temperature
Hardy to about -20 °C; protect young plants from severe frost.
How easy
Easy
Safety
Not known to be toxic. Not toxic to cats or dogs (ASPCA).
Native range
S. China, Taiwan
Climate
temperate
About
Hibiscus syriacus is a species of flowering plant in the mallow family, Malvaceae.
It is native to areas of east Asia, but widely introduced elsewhere, including much of Europe and North America. It was given the epithet syriacus because it had been collected from gardens in Syria.
How to grow it
Though it has no fall color and can be stiff and ungainly if badly pruned, H. syriacus remains a popular ornamental shrub today, with many cultivars. Full-grown plants can tolerate a wide range of conditions, including frost, drought and urban pollution. However, the best results are produced in a warm, sheltered position; a well-drained neutral soil; and full sun.
[Contains information from Leaf Area Index (LAI) and Heritage Trees from data.gov.sg (National Parks Board), made available under the terms of the Singapore Open Data Licence version 1.0]
Text excerpted from the Wikipedia article Hibiscus syriacus by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.