Kenaf
Hibiscus cannabinus
Tainung 2
About this plant
Hibiscus cannabinus, commonly known as Kenaf, is a tall, fast-growing plant related to hibiscus and cotton. It has large leaves and produces yellowish-white flowers with a dark center. Kenaf is grown for its strong fibers used in making rope, paper, and textiles. It is also valued for its ability to grow quickly and improve soil health.
Taxonomy
- Genus
- Hibiscus
- Family
- Malvaceae
- Higher classification
- Order Malvales
- Plant type
- Annual
- Lifespan
- Annual
Origin & Distribution
- Native region
- West Africa
- Distribution
- Widely cultivated in tropical and subtropical regions worldwide, including parts of Asia, Africa, and the Americas.
Care
- Light preference
- Full sun
- Suitable locations
- Outdoor, Greenhouse
- Preferred window facing
- South-facing, West-facing, East-facing
- Watering frequency
- Moderate
- Watering interval
- 3–7 days
- Humidity
- Normal
- Minimum
- 10 °C
- Maximum
- 35 °C
- Optimal
- 20-30 °C
- USDA hardiness zones
- 8-11
- Soil pH
- 6.0-7.5 (neutral to slightly acidic)
- Soil type
- well-draining loam
Watering. Water regularly to keep the soil moist but not soggy. During hot weather, increase watering frequency to prevent drying out.
Fertilizing. Apply a balanced fertilizer every 4 to 6 weeks during the growing season to support healthy growth. Avoid over-fertilizing, which can cause excessive leaf growth at the expense of fiber quality.
Hibiscus cannabinus is a fast-growing plant that prefers full sun and well-draining soil. It needs regular watering but avoid waterlogging. It can tolerate heat well but may suffer if overwatered or grown in poor light. Maintenance includes occasional pruning to keep it healthy.
Propagation
- Propagation methods
- Seeds
- Care difficulty
- Medium
Ornamental features
- Flowering
- Yes
- Flowering period
- summer
Large green leaves and attractive yellowish-white flowers with a dark center make it visually appealing.
Toxicity & Safety
- Toxic to humans
- Non-toxic
- Toxic to pets
- Non-toxic
- Weed potential
- Low spread
Non-toxic to humans and pets; safe to grow around children and animals.
Allergy information
- Allergy risk
- Moderate
- Allergy triggers
- Pollen, Sap or latex, Skin contact
- Pollen level
- Moderate
Hibiscus cannabinus may cause mild allergic reactions in sensitive individuals, mainly due to its pollen and sap. People with plant allergies should handle it with care and avoid direct skin contact to reduce irritation. Symptoms can include skin redness or mild respiratory discomfort.
Common problems
Overwatering can cause root rot, while too little light may lead to weak growth. Pests like aphids or spider mites can occasionally affect the plant.
Uses
Kenaf is mainly grown for its strong fibers used in making rope, paper, and textiles. It also serves as a fast-growing cover crop to improve soil quality and prevent erosion.
Notes
Prune to remove dead or damaged stems and to encourage bushier growth. Repotting is generally not needed as it is usually grown outdoors. Protect young plants from strong winds.