Yellow Oleander (Cascabela thevetia)
Compacta
About this plant
Cascabela thevetia, commonly called Yellow Oleander, is a small tree or large shrub known for its bright yellow, trumpet-shaped flowers. It is often grown as an ornamental plant in gardens and along streets in warm climates. Despite its beauty, all parts of the plant are toxic if ingested. It is drought-tolerant and can handle poor soils, making it popular in dry, sunny areas.
Taxonomy
Higher classification: Order Gentianales
Origin & Distribution
- Native region
- Mexico, Central America
- Distribution
- Widely cultivated in tropical and subtropical regions worldwide, including parts of Asia, Africa, and the Americas.
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 (slightly acidic to neutral)
- Soil type
- well-draining sandy or loamy soil
Watering. Water moderately, allowing the soil to dry out between waterings. Avoid waterlogging to prevent root rot.
Fertilizing. Feed the plant with a balanced fertilizer during the growing season, about every 6 to 8 weeks. Avoid over-fertilizing, which can harm the plant.
Cascabela thevetia is a tough plant that grows well in sunny, warm places. It tolerates dry conditions but needs well-draining soil. Overwatering can cause root problems. It requires moderate care and occasional pruning to keep its shape.
Propagation
- Propagation methods
- Seeds, Cuttings
Ornamental features
- Flowering
- Yes
- Flowering period
- spring–fall
Bright yellow, trumpet-shaped flowers; glossy green leaves; attractive form as a shrub or small tree.
Toxicity & Safety
All parts of the plant are poisonous if eaten. Keep away from children and pets. Handling the sap may cause skin irritation.
Allergy information
Cascabela thevetia can cause skin irritation if touched due to its sap. People sensitive to plant sap or latex should handle it carefully. Avoid contact with the sap and wash hands after handling. It produces pollen but is not a major pollen allergen.
Common problems
Problems usually come from overwatering, which can cause root rot. It may also suffer from pests like aphids or scale insects if not monitored.
Uses
Primarily grown as an ornamental plant for its bright yellow flowers and drought tolerance. Not edible due to toxicity.
Notes
Prune after flowering to maintain shape and remove dead branches. Be cautious when handling due to toxicity. Suitable for outdoor planting in warm climates; can be grown indoors with enough light.