Red Heart of Sharon Hibiscus Seeds - Hibiscus Syriacus, 30 seeds

Quantity: 30 Seeds / pack

Red Heart is a rose of Sharon (Hibiscus syriacus) grown for its large white single blooms, each marked with a deep red center — the 'red heart' that gives it its name. Flowers open from midsummer into fall on a deciduous shrub.

Rose of Sharon is a dependable late-summer shrub for hedges, screens, and specimen planting. Seedlings will be rose of Sharon plants, but as with all named shrub cultivars, flower form and marking may vary somewhat from the parent when grown from seed.

Why choose our seeds?

• Large white blooms with a striking deep-red center
• Deciduous shrub blooming midsummer to fall, when few shrubs flower
• Adaptable to heat, humidity, and a range of soils

How to grow Red Heart of Sharon Hibiscus seeds

Choose Your Planting Method

• Indoors: Start indoors 8 to 10 weeks before the last frost.
• Outdoors: Sow outdoors in spring after the last frost.

Prepare Your Materials

• Seed-starting trays or pots (if indoors)
• Well-draining potting mix
• Spray bottle for misting

Sowing the Seeds

• Soak seeds in warm water for several hours or overnight before sowing.
• Sow shallowly, about 1/16 to 1/4 inch deep.

Provide the Right Conditions

• Light: Bright light; full sun for growing plants.
• Temperature: Around 70–75°F (21–24°C).
• Humidity: Keep evenly moist; cover until sprouts appear.

Germination

• Germination usually in 7 to 21 days.
• Seedlings grow slowly at first.

Transplanting

• Transplant after frost danger; harden off gradually. Shrubs from seed take a few seasons to reach flowering size.
• Spacing: About 36 inches apart.

Care Tips

• Sun: Full sun for the heaviest bloom; tolerates part shade.
• Water: Moderate; water regularly while young and in hot, dry spells.
• Fertilizer: Balanced fertilizer in spring supports growth and bloom.
• Prune in early spring to shape; flowers form on new wood. Hibiscus leafs out late in spring — be patient.

Bloom Time:

Seed-grown shrubs generally begin flowering a few seasons after sowing, then bloom midsummer through fall.