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Oleander
Encyclopedia

Oleander

Nerium oleander

arbustoExteriorcrecimientofácil
FamilyApocynaceae
OriginMediterranean region and Asia
ToxicityToxic

Oleander is a perennial shrub extremely popular in ornamental gardening thanks to its extraordinary resilience and profuse blooming. It is characterized by its leathery, lanceolate leaves of grayish-green or intense color, which grow oppositely or in whorls of three along straight, woody stems. Although the image primarily shows its green growth stage, it is famous for producing clusters of flowers that can range from pure white to pink, red, or yellow, depending on the variety.

Botanically, it belongs to the Apocynaceae family and is native to a wide area stretching from the Mediterranean basin to Southeast Asia. In the wild, it is usually found along riverbanks and dry stream beds, where its roots seek deep moisture, although it has demonstrated astonishing adaptability to extreme drought conditions and polluted urban environments. Its growth is rapid and it can reach several meters in height if not subjected to training pruning.

In cultivation, it is valued for its low maintenance and its ability to form dense hedges or specimen plants in sunny gardens. However, it is crucial to remember that it is one of the most toxic plants commonly cultivated; it contains cardiac glycosides that can be lethal if ingested. Therefore, it is recommended to avoid planting it in areas accessible to children or livestock, and to always handle it with caution during maintenance tasks.

Care

Watering

Moderate in summer, scarce in winter. Tolerates extreme drought.

Light

Full direct sun, minimum 6 hours daily to flower.

Temperature

Very resistant (-5°C to 45°C). Protect from persistent frost.

Soil

Indifferent, requires excellent drainage. Tolerates poor and calcareous soils.

Fertilizer

Shrub fertilizer in spring and summer every 20 days.

Image gallery

Oleander 1

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