Oleanders grow at a medium to rapid pace, producing 1 to 2 feet or more of growth per year. Established plants that have been damaged by cold will regrow very quickly from the base.

Will my oleander come back?

A: Prune the oleanders back as far as you find freeze damage along the stems/branches. ... The shrubs will regrow from the roots, but for a while, of course, you will have a bare spot in the landscape if all branches are dead/damaged. Otherwise, prune oleanders after blooming.

Is oleander an annual or perennial?

New leaves are green, but they soon turn black. It is a clumping perennial in the lily family that spreads by underground stolons to form an evergreen (so to speak) groundcover that is mostly unfazed by low temperatures. Plants are hardy in USDA Hardiness Zones 5-9. It has been proven hardy to minus 20F.