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Pest Plants

Contact the WCRC Biosecurity team on 0508 800 118 or Email: dl_biosecurity@wcrc.govt.nz for:

  • ALL suspected sightings of Exclusion and Eradication pests located within the West Coast.
  • Sightings of and advice around progressive containment species
  • Advice on methods of control

Other Resources:

iNaturalist - helps identify the plants and animals around you while generating data for science and conservation

Weedbusters website – information on methods of pest plant control

There is a National Pest Plant Accord (NPPA) which lists unwanted organisms under the Biosecurity Act 1993. Listed plants cannot be sold, propagated or distributed in New Zealand.

See the MPI website for more information and to search for listed pests and diseases in NZ.

See the Regional Pest Management Plan for further detail on how pests are managed on the West Coast.


Pest Plants Listed in the West Coast Regional Pest Management Plan

Yellow Flag Iris - Environmental and Production Pest

  • Common Name: Yellow Flag Iris
  • Scientific Name:Iris pseudacorus
  • Programme: Progressive containment

African Feather Grass - Production Pest

  • Common Name: African Feather Grass
  • Scientific Name:Cenchrus macrourus
  • Programme: Eradication

Banana Passionfruit - Enviornmental and Production Pest

  • Common Name: Banana Passionfruit
  • Scientific Name:Passiflora tripartite & Passiflora tarminiana
  • Programme: Progressive containment

Blue Morning Glory - Production Pest

  • Common Name: Blue Morning Glory
  • Scientific Name:Ipomoea indica
  • Programme: Progressive containment

Broom - Environmental and Production Pest

  • Common Name: Broom
  • Scientific Name:Cytisus scoparius
  • Programme: Progressive containment / Sustained control

Cape Ivy - Environmental Pest

  • Common Name: Cape Ivy
  • Scientific Name:Senecio angulatus
  • Programme: Eradication

Cathedral Bells - Environmental Pest

  • Common Name: Cathedral Bells
  • Scientific Name:Cobaea scandens
  • Programme: Eradication

Chocolate Vine - Environmental Pest

  • Common Name: Chocolate Vine
  • Scientific Name:Akebia quinata
  • Programme: Progressive containment

Coltsfoot - Environmental Pest

Common Name: Coltsfoot

Scientific Name:Tussilago farfara

Programme: Exclusion. Thought to be eradicated from the region

Darwin's Barberry - Environmental & Production Pest

  • Common Name: Darwins Barberry
  • Scientific Name:Berberis darwinii
  • Programme: Progressive containment

Elaeagnus - Environmental Pest

  • Common Name: Elaeagnus
  • Scientific Name:Elaeagnus x reflexa
  • Programme: Progressive containment

Giant Buttercup - Production Pest

  • Common Name: Giant Buttercup
  • Scientific Name:Ranunculus acris
  • Programme: Sustained control

Giant Knotweed - Environmental and Production Pest

  • Common Name: Giant Knotweed
  • Scientific Name:Reynoutria sachalinensis
  • Programme: Progressive containment

Gunnera - Environmental Pest

  • Common Name: Gunnera
  • Scientific Name:Gunnera tinctoria & Gunnera manicata
  • Programme: Progressive containment

Himalayan Honeysuckle - Environmental and Production Pest

  • Common Name: Himalayan Honeysuckle
  • Scientific Name:Leycesteria formosa
  • Programme: Progressive containment

Japanese Honeysuckle - Environmental Pest

  • Common Name: Japanese Honeysuckle
  • Scientific Name:Lonicera japonica
  • Programme: Progressive containment

Japanese Knotweed - Environmental and Production Pest

  • Common Name: Japanese Knotweed
  • Scientific Name:Reynoutria japonica
  • Programme: Progressive containment

Maderia Vine - Environmental Pest

  • Common Name: Madeira Vine
  • Scientific Name:Anredera cordifolia
  • Programme: Eradication

Mile a Minute - Environmental Pest

  • Common Name: Mile a Minute
  • Scientific Name:Dipogon lignosus
  • Programme: Progressive containment

Nodding Thistle - Production Pest

  • Common Name: Nodding Thistle
  • Scientific Name:Carduus nutans
  • Programme: Eradication

Old Man's Beard - Environmental and Production Pest

  • Common Name: Old Man’s Beard
  • Scientific Name:Clematis vitalba
  • Programme: Progressive containment

Purple Pampas - Environmental and Production Pest

  • Common Name: Purple Pampas
  • Scientific Name:Cortaderia jubata
  • Programme: Progressive containment

Purple Loosestrife - Environmental and Production Pest

  • Common Name: Purple Loosestrife
  • Scientific Name:Lythrum salicaria
  • Programme: Progressive containment

Ragwort - Production Pest

  • Common Name: Ragwort
  • Scientific Name:Jacobaea vulgaris
  • Programme: Sustained control

Similax - Environmental Pest

  • Common Name: Smilax
  • Scientific Name:Asparagus asparagoides
  • Programme: Exclusion. Thought to be eradicated in the region.

Spartina - Environmental Pest

  • Common Name: Spartina
  • Scientific Name:S.alterniflora/angilica/townsendii
  • Programme: Exclusion. Thought to be eradicated in the region.

Tree Privet - Environmental Pest

  • Common Name: Tree Privet
  • Scientific Name:Ligustrum lucidum
  • Programme: Exclusion. Thought to be eradicated in the region.

White Pampas - Environmental and Production Pest

  • Common Name: White Pampas
  • Scientific Name:Cortaderia selloana
  • Programme: Progressive containment

White Edge Nightshade - Environmental and Production Pest

  • Common Name: White Edged Nightshade
  • Scientific Name:Solanum marginatum
  • Programme: Exclusion. Thought to be eradicated.

Wild Ginger - Environmental Pest

  • Common Name: Wild Ginger
  • Scientific Name:Hedychium gardnerianum & Hedychium flavescens
  • Programme: Progressive containment

Woolly Nightshade - Environmental and Production Pest

  • Common Name: Woolly Nightshade
  • Scientific Name:Solanum mauritianum
  • Programme: Eradication

Yellow Bristlegrass - Production Pest

  • Common Name: Yellow Bristle Grass
  • Scientific Name:Setaria pumila
  • Programme: Progressive containment
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