Weeds that pose serious threats to New ZealandThese plants are some that pose the most serious threats to our native animals and places.
- Weed list - Weedbusters website.
- Weed identification key - Landcare Research website
- Exotic plants - NZ Plant Conservation Network website
- Marine Biosecurity Porthole - NIWA
- Marine pest identification guide - MPI
Common types of weeds
Trees and shrubs (woody plants)
Weeds that are trees or shrubs overtop or replace other plants and alter the composition of native plant communities, often preventing native plant regeneration.
Common trees considered weeds include: wattles, willows, tree privet and wilding pines. Common weeds that are shrubs include: barberry, gorse, heather, broom and buddleja.
Herbs (non-woody plants)
Herbs or perennials are non-woody plants. They can overtop small plants, crowding out native plants and preventing the regeneration of native seedlings.
Examples include: wandering willie, chilean rhubarb, wild ginger and pampas grass. They can also occur in aquatic habitats eg, oxygen weed that grows in lakes.
Vines climb and scramble, smothering trees and forest canopies.
Ivy, old man’s beard, Japanese honeysuckle, climbing spindleberry, mothplant and banana passionfruit are all problem weed vines in New Zealand.