Plant ID

Oleander

Also known as

Rose Bay, Sweet Scent

Fast grower Toxic to Humans Toxic to Pets

Keep this plant’s care guide close at hand.

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About Oleander

Nerium oleander is a highly ornamental shrub known for its spectacular display of vibrant, trumpet-shaped flowers throughout the summer. Commonly growing between 2 to 5 meters tall, this evergreen shrub features leathery, lance-shaped leaves which arrange themselves in whorls. While immensely popular for its decorative appeal, oleander is equally notorious for its toxicity. Every part of the plant contains harmful compounds known to severely affect humans and animals if ingested. This tough plant is drought-tolerant, salt-tolerant, and thrives in a range of environmental conditions, making it a popular choice for landscaping in warm climates.

Taxonomy

Scientific name
Nerium oleander
Genus
Nerium
Family
Apocynaceae
Order
Gentianales

Properties & Requirements

Difficulty: Easy
Humidity: 20% - 50%
Soil pH: 6.5
Repot Every: 104 weeks

How to care for Oleander

Water

Water oleander deeply but infrequently, allowing the soil to dry out slightly between waterings. Overwatering or poor drainage can lead to root rot, whereas under-watering might cause foliage to wilt. Adjust watering based on the season and local weather conditions.

Light

For best growth, plant oleander in an area that receives full sun to partial shade. Direct sunlight is optimal for flowering, but in hotter climates, light afternoon shade can prevent scorching.

Nutrients

For optimal growth, fertilize oleander with a balanced 10-10-10 or similar ratio fertilizer in early spring before new growth begins. Avoid over-fertilizing, as this can lead to excessive foliage with fewer flowers. A slow-release formula can help provide steady nutrition.

Temperature

Oleander thrives in warmer climates and is hardy in USDA zones 8 through 10. It can withstand minor frosts but should be protected from prolonged exposure to temperatures below freezing. Optimal temperature range is between 20°C to 30°C.

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