Oleander, a poisonous, evergreen shrub. Any part of the plant, either green or dry, is extremely poisonous Eating a single leaf, for example, can kill a human being.
Oleanders are native to tropical regions of the Eastern Hemisphere. Thriving in frost-free regions, they are widely planted as decorative hedges and in borders. In colder areas they are grown in tubs that are brought inside during cold weather.Oleanders are poisonous, evergreen shrubs with white, pink, red, and purple blossoms.
Oleanders are from 7 to 25 feet (2-8 m) tall and have narrow leaves that are about 7 inches (18 cm) long. Their blossoms occur in clusters, are two to three inches (5-7.5 cm) across, and flare out into three to five petals. Double-blossomed varieties have many more petals. Varieties of the common oleanders are colored white, pink, red, and purple. The sweet oleander produces scented white or pink blossoms. The yellow oleander, a species of a closely related genus, produces fragrant yellow blossoms.
Oleanders are propagated by cuttings that grow roots rapidly in water. After rooting the cuttings are planted in pots or in moist, well-drained soil in a sunny place. Black scale and other scales attack oleanders.
The common oleander is Nerium oleander; the sweet oleander, N. indicum; the yellow oleander, Thevetia nereifolia. All belong to the dogbane family, Apocynaeeae.