Red Heart' is a medium-sized deciduous shrub of upright habit, with lobed dark green leaves. Flowers single, to 10cm in width, pure white with conspicuous deep ruby-red centres, from late summer until autumn. Common Name: Rose of Sharon Red Heart Genus: Hibiscus Species: syriacus Skill Level: Beginner Exposure: Full sun Hardiness: Hardy Soil type: Well-drained/light, Moist, Chalk, Clay, Sand, Loam Height: 2-2.5m Spread: 1.5-2m Hibiscus syriacus is a hardy deciduous shrub. The flowers are often pink in color, but can also be dark pink (almost purple), light pink or white. Individual flowers are short-lived, lasting only a day. However, numerous buds are produced on the shrub's new growth, and this provides prolific flowering over a long summer blooming period.