Oleander (Nerium oleander)



Oleadner is an occasional garden escape.


Oleander is highly toxic to humans and can cause serious illness and death if ingested. All parts the plant are poisonous, especially the leaves and flowers, causing vomiting, diarrhoea, dizziness, convulsions, irregular pulse and then respiratory distress. Smoke from burning the plants is also toxic, and oleander is also a skin irritant. Poisonings from oleander are rare, as it has a foul taste.     

What to do if poisoning occurs:

  • If the patient is unconscious, unresponsive or having difficulty breathing dial 000 or get to the emergency section of a hospital immediately.
  • If the patient is conscious and responsive call the Poisons Information Centre on 13 11 26 or your doctor.
  • If going to a hospital take a piece of the plant for identification.


Oleander is an evergreen shrub up to 6 m high and 3 m wide. 


Shepherd R.C.H (2010) Is that plant poisonous?. (Everbest Piniting, China).

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Herbicide options

Users of agricultural or veterinary chemical products must always read the label and any permit, before using the product, and strictly comply with the directions on the label and the conditions of any permit. Users are not absolved from compliance with the directions on the label or the conditions of the permit by reason of any statement made or not made in this information. To view permits or product labels go to the Australian Pesticides and Veterinary Medicines Authority website www.apvma.gov.au

See Using herbicides for more information.

Picloram 44.7 g/kg + Aminopyralid 4.47 g/L (Vigilant II ®)
Rate: Undiluted
Comments: Cut stump/stem injection application. Apply a 3–5 mm layer of gel for stems less than 20 mm. Apply 5 mm layer on stems above 20 mm .
Withholding period: Nil.
Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)
Resistance risk: Moderate

Triclopyr 240 g/L + Picloram 120 g/L (Access™ )
Rate: 1.0 L in 60 L of diesel
Comments: Basal bark application plants up to 5 cm basal diameter. Cut stump application plants over 5 cm.
Withholding period: Nil
Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)
Resistance risk: Moderate

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Legal requirements

Oleander (Nerium oleander) is not declared in NSW under the Noxious Weeds Act 1993.

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Reviewed 2014