Rose of Sharon 'Red Heart' – Hibiscus syriacus

Overview

'Red Heart' is a classic cultivar of Rose of Sharon (Hibiscus syriacus), a deciduous flowering shrub beloved for its long summer bloom season. This selection features pure white, ruffled petals with a striking deep red center, creating a high-contrast "red heart" effect.

Botanical Profile

Growth & Flowering

Upright, vase-shaped shrub reaching 8–12 feet tall and 6–8 feet wide. Blooms from midsummer to fall, each flower 3–4 inches wide, single to semi-double. The white petals are slightly crinkled, surrounding a prominent dark red eye. Foliage is medium green, three-lobed, emerging late in spring.

Cultivation

• Zones: 5–9.
• Sun: Full sun for best flowering.
• Soil: Average, well-drained; tolerant of clay and urban conditions.
• Water: Moderate; drought-tolerant once established.
• Pruning: Late winter to early spring; blooms on new wood.

Landscape Value

Excellent as a specimen, hedge, or in mixed borders. Attracts hummingbirds and butterflies. Seedlings may appear but are easily managed.