Oleander

Nerium oleander · Tree/Shrub

A tough evergreen shrub that flowers all summer in heat and drought. It is highly toxic in all parts, so plant it away from children's play areas and pets, and wear gloves when pruning.

Care at a glance

Light

Full sun, 6+ hours

Water

Deeply every 1–2 weeks in summer; drought-tolerant once established

Soil

Well-drained, any texture, pH 5.0–8.0

Temperature

Best 65–95 °F; damaged below about 20 °F

Spacing

6–12 ft apart; 3–4 ft for a hedge

Container

At least 10 gallons; bring indoors in cold winters

Bloom

Early summer to autumn

Lifespan

Perennial; long-lived

When?

Plant in spring once frosts are over, so the shrub can root in before winter (estimated).

Step by step

1. Wear gloves and long sleeves when handling; the sap is toxic.
2. Plant in a sunny spot well away from pet runs and play areas.
3. Set at the same depth as in the pot and water deeply.
4. Water weekly in the first summer, then only in long dry spells.
5. Feed lightly in spring if growth is weak.
6. Prune after flowering to shape; never burn the clippings.
7. Bag clippings and keep them away from livestock and pets.

Common problems

Pets

Highly toxic to cats and dogs according to ASPCA; all parts are dangerous even in small amounts. Contact your vet immediately if chewing is suspected.

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