Hawaiian hibiscus (Hibiscus brackenridgei)
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About this plant
Hibiscus brackenridgei, known as the Hawaiian hibiscus, is a striking flowering shrub native to Hawaii. It produces large, bright yellow flowers that attract pollinators and add vibrant color to gardens. This plant is the state flower of Hawaii and is valued for its beauty and cultural significance. It grows as a shrub or small tree and is well-suited for warm climates.
Taxonomy
Higher classification: Order Malvales
Origin & Distribution
- Native region
- Hawaii
- Distribution
- Native to Hawaii, cultivated in tropical and subtropical regions worldwide.
Care
- Suitable locations
- Outdoor, Balcony, Greenhouse
- Preferred window facing
- South-facing, West-facing
- USDA hardiness zones
- 9–11
- Soil pH
- 6.0–7.5 (slightly acidic to neutral)
- Soil type
- well-draining loam or sandy soil
Watering. Water regularly during the growing season but allow the soil to dry out slightly between waterings. Reduce watering in winter.
Fertilizing. Feed the plant with a balanced, slow-release fertilizer in spring and summer to encourage healthy growth and flowering. Avoid over-fertilizing, which can harm the plant.
Hibiscus brackenridgei is a hardy plant that prefers full sun and well-draining soil. It tolerates dry conditions once established but needs occasional watering during prolonged dry spells. It requires moderate care, including occasional pruning to maintain shape and remove dead parts.
Propagation
- Propagation methods
- Seeds, Cuttings
Ornamental features
- Flowering
- Yes
- Flowering period
- spring–summer
Large bright yellow flowers, attractive green foliage, shrub form
Toxicity & Safety
Generally safe but avoid ingestion; may cause mild stomach upset if eaten.
Allergy information
Hibiscus brackenridgei may cause mild allergic reactions in sensitive individuals, mainly due to its pollen. People with pollen allergies might experience sneezing or itchy eyes when near the plant. To reduce exposure, avoid handling the flowers during peak blooming and keep the area well-ventilated.
Common problems
Overwatering can lead to root rot, and insufficient sunlight may cause poor flowering. Pests like aphids or spider mites can occasionally affect the plant.
Uses
Primarily grown as an ornamental plant for its beautiful flowers and cultural significance in Hawaii.
Notes
Prune after flowering to maintain shape and encourage new blooms. Protect from strong winds and frost. Repot young plants every 2–3 years if grown in containers.