POISONOUS PLANTS IN NEW ZEALAND

The following list of was supplied by the New Zealand Ministry of Education and is part of a resource published by the Ministry of Health: Nga kupu Oranga, Healthy Messages, A health and safety resource for early childhood services.

Some of the names have been corrected on this page. Links from the plant names are to images and descriptions reproduced with permission from Common Weeds of New Zealand.

  • Apple of Sodom (Solanum linnaeanum Hepper & P.-M. Jaeger)
    Poisonous parts: The berries
  • Apricot (Prunus armeniaca L.)
    Poisonous parts: The kernels inside the fruit stone. However, they are not poisonous once they have been cooked
  • Arum (Arum spp.)
    Poisonous parts: All parts
  • Bittersweet (Solanum dulcamara L.)
    Poisonous parts: All parts, especially the berries
  • Boxthorn (Lycium ferocissimum Miers)
    Poisonous parts: Berries
  • Buttercup (Celery-leaved) (Ranunculus sceleratus L.)
    Poisonous parts: Leaves and flowers
  • Calico bush (Kalmia latifolia L.)
    Poisonous parts: All parts
  • Cape tulip (Homeria collina (Thunb.) Vent.)
    Poisonous parts: All parts are very poisonous, even when they are dead and dry
  • Castor oil plant (Ricinus communis L.)
    Poisonous parts: Seeds
  • Daphne (Daphne spp.)
    Poisonous parts: All parts
  • Elephant ear (Alocasia brisbanensis (F.M.Bailey) Domin.)
    Poisonous parts: Flowers, leaves and stems
  • English yew (Taxus baccata L.)
    Poisonous parts: The brown seed inside each berry
  • Foxglove (Digitalis purpurea L.)
    Poisonous parts: Leaves and seeds
  • Hemlock (Conium maculatum L.)
    Poisonous parts: All parts are very poisonous, even when they are dead and dry
  • Henbane (Hyoscyamus niger L.)
    Poisonous parts: Seed and fruit
  • Holly (Ilex aquifolium L.)
    Poisonous parts: Berries
  • Horse chestnut (Aesculus hippocastanum L.)
    Poisonous parts: Seeds
  • Inkweed (Phytolacca octandra L.)
    Poisonous parts: Berries, leaves and root
  • Ivy (Hedera helix L.)
    Poisonous parts: The fruit of some plants. People with sensitive skins may also develop a rash after touching the plant
  • Ivy, Poison (Rhus radicans L.)
    Poisonous parts: The climbing plant is very poisonous when touched. The shrub may also cause a rash and swelling if it is touched by people with sensitive skin
  • Jerusalem Cherry (Solanum pseudocapsicum L.)
    Poisonous parts: All parts, particularly the berries
  • Karaka (Corynocarpus laevigatus J.R.Forst. & G.Forst.)
    Poisonous parts: The kernels of the fruit
  • Kowhai (Sophora microphylla Aiton)
    Poisonous parts: All parts, but mainly the seeds
  • Laburnum (Laburnum anagyroides Medik.)
    Poisonous parts: All parts, especially the seeds
  • Lantana (Lantana carmara L.)
    Poisonous parts: The fruit
  • Lily-of-the-Valley (Convallaria majalis L.)
    Poisonous parts: All parts, especially the seeds
  • Milkweed (Euphorbia peplus L.)
    Poisonous parts: The fruit and leaves
  • Ngaio (Myoporum laetum G.Forst.)
    Poisonous parts: The fruit, leaves and any other green parts
  • Nightshade, Black (Solanum nigrum L.)
    Poisonous parts: The leaves and green berries
  • Nightshade, Deadly (Atropa bella-donna L.)
    Poisonous parts: All parts are very poisonous
  • Oleander (Nerium oleander L.)
    Poisonous parts: All parts, especially the leaves and flowers
  • Onga-onga or Tree Nettle (Urtica ferox G.Forst.)
    Poisonous parts: The fine white stinging hairs are violently and can cause death if badly stung
  • Peach (Prunus persica (L.) Batsch)
    Poisonous parts: The raw pip that is found inside the fruit stone
  • Poppy (Papaver spp.)
    Includes Iceland, Shirley and Oriental poppies
    Poisonous parts: The unripe seeds
  • Poroporo (Solanum aviculare G.Forst.)
    Poisonous parts: The leaves and green berries
  • Potato (Solanum tuberosum L.)
    Poisonous parts: Green potatoes and the berries
  • Privet (Ligustrum vulgare L.)
    Poisonous parts: The leaves and fruit
  • Queen of the Night (Cestrum nocturnum L.)
    Poisonous parts: All parts
  • Rangiora (Brachyglottis repanda J.R.Forst. & G.Forst.)
    Poisonous parts: All parts, especially the flowers and sap
  • Rhododendron (Rhododendron spp.)
    Poisonous parts: All parts
  • Spindle Tree (Euonymus europaeus L.)
    Poisonous parts: The fruit and leaves
  • Thornapple or Jimsons Weed (Datura stramonium L.)
    Poisonous parts: All parts, except the soft, black petals
  • White Cedar (Melia azedarach L.)
    Poisonous parts: The fruit

Web-notes: Poisonous Plant Links

Poisonous Plants in NZ by HE Connor
Poisonous Plants poster
Plants that Poison: a New Zealand Guide, a book by Henry Connor and John Fountain.
Poisonous Plants Poster depicting some of the more common poisonous plants within New Zealand. (Out of print).
 

Further information and lists on Poisonous Plants in New Zealand
are available from Landcare Research
, including:

  • Plants in New Zealand Poisonous to Children, also available here PDF
    (this pamphlet replaces the separate lists for the North and South Islands).
  • Safety in pre-school centres: plants to avoid, also available here PDF

Get Acrobat Reader

 

To contact the New Zealand National Poisons Centre:

0800 POISON / 0800 764 766 — for poisons advice 24 hours a day seven days a week.
(03) 479 7248 - for all other enquiries between 9am and 5pm week days.
(03) 477 0509 — facsimile.
E-mail — poisons@otago.ac.nz

Websites:

  • The TOXINZ Poisons Information database, developed at the University of Otago, today contains more than 190,000 documents with comprehensive and up-to-date information on poisonous chemicals, pharmaceuticals, plants and animals.

If there are serious symptoms of poisoning, treat as an emergency and dial 111 for an ambulance.

 

Cornell University Plants Poisonous to Livestock and other Animals

This is a growing reference that includes plant images, pictures of affected animals and presentations concerning the botany, chemistry, toxicology, diagnosis and prevention of poisoning of animals by plants and other natural flora (fungi, etc.).


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Last updated: July 19, 2022