Botanical atlas

Yellow Oleander

Thevetia neriifolia

Yellow oleander earned its nickname of lucky nut because its glossy, rounded seed has long been carried as a pocket charm or threaded into jewelry in parts of the Caribbean and Central America, a strange bit of folklore for a plant that is, in truth, quietly dangerous. Beyond ornament, communities in its native range and in South and Southeast Asia, where it later spread as a garden favorite, have historically used crushed seeds and bark as a rat poison, fish stupefying agent, and insecticide. It has no established safe place in home herbalism, and its long, sobering history includes widespread use as a means of self-poisoning in parts of South Asia, which is precisely why this entry treats it as a plant to admire, never to prepare.

Safety.

Every part of Thevetia neriifolia (yellow oleander) is highly toxic, including the seeds, sap, bark, leaves, and flowers. The plant contains potent cardiac glycosides (thevetin A and B, peruvoside, and related compounds) that disrupt the heart's rhythm and can cause nausea, vomiting, dangerously irregular heartbeat, and death. A single seed can be enough to seriously harm or kill a child, and this plant has a well-documented history as an agent of accidental and intentional poisoning, particularly in South Asia. The milky sap can also irritate skin and eyes on contact. This plant should never be eaten, brewed, or applied to the skin in any home remedy, and it should be kept well out of reach of children, pets, and livestock. If ingestion is suspected, treat it as a medical emergency and seek immediate care or contact a poison control center. This entry is provided for identification and gardening awareness only; consult a physician, toxicologist, or other qualified professional for any concerns, and never use this plant as a substitute for medical care.