There is a very serious problem creeping into our state that has the potential to adversely affect each and every Arizonan. This problem is particularly sinister because by the time it becomes widely noticeable, it will probably be too late to do much about it. Whether you are a camper, hunter, fisherman, farmer, rancher, recreationist, birder, wilderness advocate, environmentalist, or even if you have no interest in outdoor activities of any kind, noxious weeds threaten the quality of natural resources.
Poisonous plants are a major cause of economic loss to the livestock industry. Each year poisonous plants adversely affect 3 to 5 percent of the cattle, sheep, and horses that graze western rangelands.