Invasive and Noxious Plant Problems


Purple Loostrife (Lythrum salicaria) is considered a noxious weed that invades wetland areas. It is considered invasive in all lower 48 US states. Photo credit: Ron Schott Flickr CC BY-NC-SA 2.0


Burning bush also called Winged euonymus (Euonymus alatus), is considered an invasive shrub in some parts of the US. Photo credit: Susan Buffler


Norway maple (Acer platinoides) an invasive, yet widely popular, street and lawn tree readily reseeds itself. Photo credit: geneva_wirth Flickr

Noxious Weeds and Water-Conserving Landscapes

  Drought tolerant Field bindweed is a common noxious weed that is extremely difficult to control. Photo credit: AnnJ-KY Flickr CC BY-NC-ND 2.0

Weeds are plants that frustrate gardening or landscaping goals. Like other plants, weeds are categorized as perennial, annual, grassy, broadleaf, and woody, and are managed accordingly.

Unfortunately, some weeds are so aggressive and difficult to control that they are labeled ‘noxious’.

Executive Order 13112 (February 3, 1999) identifies noxious weeds as “an alien species whose introduction does …