Environmental issues

Pests and weeds

NSW Weeds

There are 1,665 weed species in NSW. Of these, over 340 have the ability to threaten biodiversity and many have been identified in key threatening processes. Weeds, along with pest animals, pose the second greatest threat to biodiversity after habitat loss.

Weeds in general

OEH manages weeds in its national parks and nature reserves, and develops and implements strategies for weeds that threaten biodiversity. For information on strategies to manage specific weeds, see the left-hand navigation pane. Alternatively, priorities to manage all widespread weeds in the 13 former catchment management authorities in NSW have been developed. Eleven Local Land Services regions replace the 13 catchment management authorities, and biosecurity and natural resource management are now part of their responsibilities.  

An overview of the various weed management strategies currently in use in NSW is provided by the NSW Department of Primary Industries (DPI). The NSW Invasive Species Plan proposes actions to prevent, eradicate, contain and reduce the impact of invasive species in NSW. Goals 1 and 2 are to exclude and eradicate or contain weed species in the state, under Goal 3, widespread weed management for conservation is addressed through the Biodiversity Priorities for Widespread Weeds.

OEH is a partner in the Weeds of National Significance (WoNS) program. Serious environmental weed species in NSW such as bridal creeper, bitou bush, lantana, opuntioid cacti, and African boxthorn are WoNS.


Page last updated: 18 February 2016