Common mullein (Verbascum thapsus) is a weed species that's increasing in northeast Nebraska's rangeland, woodland, and pastures. It is a biennial plant that reproduces only by seeds, but it is a prolific seed producer. The taproot of this species can access soil moisture from a deeper profile at a much better rate than fibrous roots of pasture grasses, giving it a competitive advantage, especially in dry years.
The Lincoln Logan McPherson Extension Office was going to have a demonstration project on controlling common mullein, but due to the COVID 19 virus we are unable to have this demonstration project this year. Below are some tips for controlling common mullein.
You may also find more information at the following link https://cropwatch.unl.edu/2018/common-mullein-invasive-weed-nebraska%E2%80%99s-horizon