Blue Butterfly Bush (Clerodendrum incisum)
Incisum
About this plant
Clerodendrum incisum, commonly known as the Blue Butterfly Bush, is a tropical shrub admired for its striking blue flowers that resemble butterflies. It has attractive green leaves and can grow into a bushy plant. It is often grown as an ornamental plant in gardens and landscapes for its unique flowers and fast growth.
Taxonomy
Higher classification: Order: Lamiales
Origin & Distribution
- Native region
- Tropical Asia
- Distribution
- Native to tropical Asia, it is cultivated in warm regions worldwide as an ornamental plant.
Care
- Suitable locations
- Outdoor, Balcony, Greenhouse
- Preferred window facing
- East-facing, Southeast-facing, South-facing
- USDA hardiness zones
- 9-11
- Soil pH
- 6.0-7.5 (slightly acidic to neutral)
- Soil type
- well-draining loam or potting mix
Watering. Water regularly to keep the soil moist but not soggy. Allow the top inch of soil to dry out between waterings to prevent root rot.
Fertilizing. Feed the plant with a balanced liquid fertilizer every 4 to 6 weeks during the growing season (spring and summer). Reduce feeding in fall and winter when growth slows down.
Clerodendrum incisum is a moderately easy plant to care for. It prefers partial shade and well-draining soil. Overwatering can cause root problems, so let the soil dry slightly between waterings. It grows quickly and benefits from occasional pruning to keep a neat shape.
Propagation
- Propagation methods
- Cuttings, Seeds
Ornamental features
- Flowering
- Yes
- Flowering period
- summer
Bright blue butterfly-shaped flowers, lush green foliage, bushy form
Toxicity & Safety
Not known to be toxic to humans or pets, but avoid ingestion and contact with sap to prevent mild irritation.
Allergy information
Clerodendrum incisum may cause mild skin irritation in some people who are sensitive to plant sap. It does not produce much airborne pollen, so it is unlikely to trigger pollen allergies. To reduce any risk, avoid direct contact with the sap and wash your hands after handling the plant.
Common problems
Common problems include root rot from overwatering and leaf yellowing if the plant gets too much direct sun. Occasionally, pests like aphids or spider mites may appear but can be managed with regular inspection.
Uses
Primarily grown as an ornamental plant for its attractive flowers and foliage. It adds color and interest to gardens and patios.
Notes
Prune after flowering to encourage bushier growth and remove any dead or weak branches. Repot young plants every 2-3 years to refresh soil and support growth. Sensitive to frost, so protect or bring indoors in colder climates.