 There's a wide variety of plants that live here in Wyoming including introduced plants those that were brought here from another continent Accidentally or intentionally, but usually by humans the plants in this hay meadow are introduced and provide a great hay crop Introduced is a broad term that includes many many plants Most of them don't cause any problems at all and many of them are actually beneficial However, a very small portion of them somewhere between 1 and 10 percent cause a lot of serious problems These are the invasive plants ones that escape our control and spread rapidly on their own Invasive plants like this white top negatively affect us all whether you're managing for wildlife habitat Agriculture or simply like to enjoy the great outdoors So natural resource managers spend a lot of time and effort trying to get rid of existing patches of weeds and prevent new Ones from getting started from the University of Wyoming Cooperative Extension Service. I'm Paul Minan