Yellow Oleander
Cascabela thevetia (syn. Thevetia peruviana)
Yellow Oleander is a striking evergreen shrub with bright yellow or orange bell-shaped flowers. Despite its beauty, all parts are highly toxic. It thrives in tropical and warm climates as an ornamental plant.
Apocynaceae (Dogbane family)
Spring through fall; nearly year-round in frost-free tropical climates
Symbolism & Meanings
Key Meanings
Perfect For
Color Meanings
Similar flowers: brugmansias and daturas also share similar meanings.
Cultural Significance
Yellow Oleander is named after André Thevet (1502-1592), a French monk who traveled in Brazil and Guiana. The genus name "Cascabela" comes from Spanish meaning "small bell," referring to the flower shape. In some Hindu traditions, it has religious significance and is used in worshiping Shiva. Despite its beauty and sweet fragrance, the plant is infamous for accidental poisonings and has been involved in both medicinal use and misuse throughout history. Its common name "Be-Still Tree" may refer to its cardiac-slowing effects or its use in calming rituals, though its extreme danger cannot be overstated.Shop Our Floral Collection
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Physical Characteristics
Natural Habitat
Growing Guide
Sunlight
Full sun to partial shade
Water
Moderate; drought-tolerant once established; allow soil to dry between waterings
Soil
Well-drained, Sandy, Rocky, Average
Expert Growing Tips
Deadhead spent blooms to prevent seed pods and encourage more flowers
Prune to maintain desired shape and size
Provide well-drained soil to prevent root rot
Suitable for USDA zones 10-11; protect from frost
CRITICAL: Highly toxic—keep away from children and pets
Uses & Benefits
Ornamental Uses
- Hedges and screens (informal)
- Specimen shrub or small tree
- Tropical landscapes
- Median plantings and roadsides
- Container plant in warm climates
Traditional Uses
- Historically used in some traditional medicine but NOT RECOMMENDED due to extreme toxicity
- Contains cardiac glycosides (similar to digitalis) that are extremely dangerous
- All parts are poisonous if ingested—can cause severe cardiac symptoms, electrolyte imbalances, and death
Disclaimer: Information provided is for educational purposes only. Consult healthcare professionals before using any plant medicinally.
Further Reading
Frequently Asked Questions about the Yellow Oleander
Is Yellow Oleander poisonous?
Yes, Yellow Oleander is extremely poisonous. All parts contain deadly cardiac glycosides that can cause severe symptoms including irregular heartbeat, vomiting, dizziness, and death. Keep away from children and pets at all costs.
What are the symptoms of Yellow Oleander poisoning?
Symptoms include burning sensation in the mouth, nausea, vomiting, diarrhea, dizziness, slow or irregular heartbeat, and electrolyte imbalances. Ingestion requires immediate emergency medical attention—call poison control or 911.
Can you touch Yellow Oleander?
Yes, touching the plant is generally safe, but the milky sap can cause skin and eye irritation. Always wear gloves when pruning and wash hands thoroughly after handling. Never ingest any part of the plant.
How do you care for Yellow Oleander?
Grow in full sun to partial shade with well-drained soil. Water regularly but allow soil to dry between waterings. Deadhead spent blooms and prune to maintain shape. Plant only in locations inaccessible to children and pets.
Is Yellow Oleander the same as regular oleander?
No, Yellow Oleander (Cascabela thevetia) and regular oleander (Nerium oleander) are different species in different genera, though both are in the Apocynaceae family. Both are highly toxic but have different appearances and growth habits.
Available Colors
Quick Facts
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