About: List of invasive plant species in New South Wales

Numerous plants have been introduced to the state of New South Wales, Australia during the past two centuries, and many of them have become invasive species or noxious weeds which by definition compete with native plants and suppress the growth of indigenous populations. NSW has over 340 weeds, though only one-third are considered noxious, which were purposefully introduced as garden and farmland plants, and thus had escaped. They generally consist of agricultural, scrub, aquatic, roadside and allergenic weeds.