Options for Control of Noxious Weeds Mowing of the noxious weeds would be considered a form of weed control. The problem with just mowing the weeds is that most of our noxious weeds are perennial plants and will have a very extensive root system on them. If these plants are only mowed, than the root system will have a chance to expand and create more weed problems in the future.
The use of livestock is another form of weed control. Most goats and sheep will be able to tolerate the noxious weeds. Cattle and horses seem to have trouble digesting these weeds correctly unless they have been raised eating these plants and are used to the taste of them.