Rose of Sharon Live Plants – Hardy Althea Hibiscus Shrubs Perfect for Gorgeous Outdoor Gardens The Hibiscus Rose of Sharon (Hibiscus syriacus) is a deciduous flowering shrub known for its large, beautiful blooms that grace gardens from late summer to fall Growing up to 8-12 feet tall and 6-10 feet wide, the Rose of Sharon is a versatile plant that can be shaped into a tree or grown as a multi-stemmed shrub Sunlight: Prefers full sun to partial shade USDA Zones: 5-9 Growth Rate: Moderate to fast-growing