They are all within states surrounding Nevada. While the extent of infestations in Nevada may be relatively small by comparison, Nevada is not immune. In fact, these infestations are at or crossing the borders on every side of the State. We estimate that between 20 and 26 million acres of the total 70 million acres in Nevada are susceptible to weed establishment and spread, based on occurrence of 8-12 inch precipitation zones. Nevada is not too dry for weeds.
Noxious weeds are here and spreading.
Recently, the Lamoille Weed District in northeastern Nevada was formed to combat leafy spurge . The Lamoille Weed District is but one of several new or forming weed districts in Nevada. Exotic plants originally arrived from other countries, without the natural enemies that kept them in check in their country of origin. Consequently, these new plants are typically very aggressive and have the ability to dominate many sites with dramatic impacts to native plant communities. Wildlife habitat deteriorates, erosion increases, water quality diminishes, recreation values are degraded, and exotic plants contribute to desertification.