Form: A shrub or tree, depending on variety and pruning.
Leaf retention: Evergreen.
Growth rate: Moderate to rapid.
Mature Size: 3-20' high and 3-12' wide depending on variety.
Flowers: Red, pink, salmon, yellow, or white, in terminal clusters, with a single or
double row of petals. Some varieties are fragrant. These flowers produce no nectar.
Bloom: Spring into fall.
Fruit: Brown seed pod with airborne seeds.
Leaves: Lance-shaped, 3-5" long, dark green on top, lighter underneath. Oleander
provides medium shade.
Stems: No thorns. Gray.
Roots: Wide and deep.
Wildlife: A few insect larvae feed on this plant. It generally does not attract
or support wildlife, is considered wildlife unfriendly, and therefore less desirable as a
garden plant, especially because of its toxicity.
Toxic / Danger: All parts of this plant are toxic including its pollen. The smoke
from burning leaves and stems is toxic. The sap may cause a skin rash. It should not be
browsed by domesticated animals, or pets, and may cause their death.
Origin: The Mediterranean basin to southwest Asia. This plant has been so widely
cultivated since ancient times that its exact geographic origin is uncertain.
Cultivation and Uses
USDA hardiness zones: 8b-11.
Heat tolerant: Yes.
Drought tolerant: Yes.
Sun: Full sun.
Water once established: Once or twice a month.
Soil: Oleander is tolerant of soil types in the pH range of 5.1-8.5 (highly acidic to alkaline).
It performs best in alkaline soil.
Prune: In mid-winter, prune to shape. Do not shear.
Litter: Moderate. Blossom drop.
Propagation: Seed or cuttings.
Pests: Oleander Leaf Scorch disease, a bacterium spread by sharpshooter insects, and associated
with irrigation, can be a problem in a few location.
Uses: Ornamental, screen, hedge.
Oleander is a member of the Dogbane family (Apocynaceae). It is a tough plant and will re-sprout from
its roots if cut to the ground.
Do you have additional information or a different
experience for this plant that you would like to share?
Email firstname.lastname@example.org. All contributions
are welcome and appreciated.
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Latest update: October, 2021.