Oleanders are shrubs with dull green leaves. These leaves are 10 inches long and have an opposite, sessile, lanceolate arrangement. The oleander has invasive roots and poisonous leaves.
Oleanders can tolerate poor soil and older plants can be trimmed up as trees, revealing gnarled single or multiple trunks. These shrubs are commonly pruned to shape. There are many trademarked varieties available.
Oleanders have landscape value as a border, barrier, or hedge shrub.