Scarlet Hibiscus
Hibiscus coccineus
Alba
About this plant
Hibiscus coccineus, commonly known as Scarlet Hibiscus, is a striking perennial plant known for its large, bright red flowers that resemble stars. It has deeply lobed leaves and can grow quite tall, making it a dramatic addition to gardens. It is often used in water gardens or moist areas and attracts hummingbirds and butterflies.
Taxonomy
- Genus
- Hibiscus
- Family
- Malvaceae
- Higher classification
- Order Malvales
- Plant type
- Perennial
- Lifespan
- Perennial
Origin & Distribution
- Native region
- Southeastern United States
- Distribution
- Native to the southeastern United States, it is cultivated in gardens worldwide in suitable climates.
Care
- Light preference
- Full sun
- Suitable locations
- Outdoor, Balcony, Greenhouse
- Preferred window facing
- South-facing, West-facing
- Watering frequency
- Moderate
- Watering interval
- 3–7 days
- Humidity
- Normal
- Minimum
- -15 °C
- Maximum
- 35 °C
- Optimal
- 18-30 °C
- USDA hardiness zones
- 7-10
- Soil pH
- 6.0-7.5
- Soil type
- well-draining loam, moist soil
Watering. Keep soil consistently moist, especially during hot weather. Avoid letting the soil dry out completely but ensure good drainage to prevent root rot.
Fertilizing. Feed with a balanced, slow-release fertilizer in spring and mid-summer to support healthy growth and flowering. Avoid over-fertilizing, which can reduce blooms.
Hibiscus coccineus is a hardy plant that prefers full sun and moist soil but can tolerate some drought once established. It may struggle if overwatered or grown in poor drainage. Regular pruning helps maintain its shape and encourages blooming.
Propagation
- Propagation methods
- Seeds, Cuttings
- Care difficulty
- Medium
Ornamental features
- Flowering
- Yes
- Flowering period
- summer
Large bright red star-shaped flowers, deeply lobed green leaves, tall upright form.
Toxicity & Safety
- Toxic to humans
- Non-toxic
- Toxic to pets
- Non-toxic
- Weed potential
- Not considered a weed
Generally considered non-toxic but avoid ingestion and contact with sap to prevent mild irritation.
Allergy information
- Allergy risk
- Low
- Allergy triggers
- Pollen, Sap or latex, Skin contact
- Pollen level
- Moderate
Hibiscus coccineus may cause mild skin irritation in sensitive individuals due to its sap. It produces pollen that can trigger allergies in some people, especially during its flowering season. To reduce exposure, avoid direct contact with the sap and limit time near the plant when it is blooming if you have pollen allergies.
Common problems
Common problems include root rot from overwatering and leaf spots if air circulation is poor. It can also be affected by aphids and spider mites if not monitored.
Uses
Primarily grown as an ornamental plant for its showy flowers and ability to attract pollinators. Suitable for garden borders and water edges.
Notes
Prune in early spring to remove dead stems and encourage new growth. It can be propagated by seeds or cuttings. Prefers moist soil but can tolerate short dry periods once established.