Asian spiderflower (Cleome viscosa)
Viscosa
About this plant
Cleome viscosa, commonly known as Asian spiderflower, is an annual herbaceous plant with sticky stems and yellow flowers. It is known for its fast growth and ability to thrive in poor soils. The plant has a distinctive smell and sticky texture due to glandular hairs. It is often used in traditional medicine and as a cover crop to improve soil.
Taxonomy
Higher classification: Order Brassicales
Origin & Distribution
- Native region
- Tropical Asia, Africa
- Distribution
- Native to tropical Asia and Africa; widely naturalized in tropical and subtropical regions worldwide.
Care
- Suitable locations
- Outdoor, Balcony, Greenhouse
- Preferred window facing
- South-facing, West-facing, East-facing
- USDA hardiness zones
- 9-11
- Soil pH
- 6.0-7.5
- Soil type
- well-draining loam or sandy soil
Watering. Water moderately, allowing the soil to dry slightly between watering. Avoid waterlogging to prevent root rot.
Fertilizing. Fertilize lightly with a balanced fertilizer during the growing season to support healthy growth. Excessive fertilizing is not necessary and can reduce flowering.
Cleome viscosa is a hardy and fast-growing plant that prefers sunny locations and well-drained soil. It tolerates dry conditions well and requires minimal care once established. Overwatering or poor drainage can cause root problems, so watering should be moderate and soil should not stay soggy.
Propagation
- Propagation methods
- Seeds
Ornamental features
- Flowering
- Yes
- Flowering period
- summer
Bright yellow flowers with long stamens giving a spider-like appearance; sticky stems and leaves; upright bushy form.
Toxicity & Safety
Generally non-toxic but may cause mild skin irritation on contact. Keep away from children and pets to avoid any discomfort.
Allergy information
Cleome viscosa may cause mild skin irritation in some people who touch its leaves or stems. It produces pollen that can trigger allergies in sensitive individuals, especially during its flowering season. To reduce exposure, avoid direct contact with the plant and keep it away from indoor living spaces if you have pollen allergies.
Common problems
Overwatering can lead to root rot. In dry conditions, the plant may wilt but usually recovers after watering. Pests are generally not a major problem.
Uses
Used as an ornamental plant for its bright flowers, in traditional medicine, and as a cover crop to improve soil quality.
Notes
Prune to control size and encourage bushier growth. The plant can self-seed readily in warm climates. Avoid planting near walkways as the sticky stems can be unpleasant to touch.