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Ornamentals

Oleander

Nerium oleander

Oleander
Photo: Alvesgaspar · CC BY 2.5 · Wikimedia Commons

A Mediterranean shrub that flowers all summer with little water. The whole plant is toxic.

Light
Full sun (6 h or more)
Height
2–4 m
Watering
Low: every 7–15 days, drought-tolerant
Soil
undemanding; tolerates chalky soil
Edible?
No: the whole plant is toxic
How to plant
Dig a hole twice the root ball; 1.5 m apart. Water well the first summer.
Care
Prune with gloves after flowering. Don't burn the clippings: the smoke is toxic too.

Calendar by climate

Warm coast
Mild Mediterranean
Southern interior
Continental interior
Cold interior and uplands
Atlantic
Canary Islands (subtropical)
SowPlantHarvestPruneFeedTreat

Dates are for growing outdoors, based on the local climate. In a greenhouse or tunnel everything comes earlier.

Feeding and doses

Mild Mediterranean

  • Organic granular fertiliserApr50–80 g / m²

Pest prevention and doses

Mild Mediterranean

  • AphidsPotassium soap · May10–20 ml / L

Approximate doses: always follow the product label. Spray in the evening, never in full sun or on flowers visited by bees. No sulphur above 30 °C.

How easy to grow by climate

  • Warm coastEasy
  • Mild MediterraneanEasy
  • Southern interiorEasy
  • Continental interiorNeeds regular careFrost and a short season
  • Cold interior and uplandsDifficultHard, long frosts
  • AtlanticNeeds regular careRain and humidity: fungal disease
  • Canary Islands (subtropical)Easy

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