 Perennial pepperweed is an erect, branching perennial that grows one to three feet high, but may reach heights of eight feet in wet areas. It is a prolific seed producer, capable of producing more than six billion seeds per acre of infestation. This plant spreads through profuse seed production and extensive, creeping roots. Perennial pepperweed tends to establish rapidly and colonize in pastures, riparian habitats, and wetland areas. You can also find it growing along roadsides, in rangeland as well as crop ground. It degrades nesting habitat for wildlife and displaces desirable species in natural areas and hay meadows. Perennial pepperweed's delicate white flowers, which are sometimes collected for dry flower arrangement. ControlMechanical: The creeping root system compounds the problem by allowing the infestation to increase in size. It is nearly impossible to cut the roots fine enough to prevent the sprouting of buds that form new plants.Biological: This weed is not desirable forage for livestock or wildlife. There are no known biological agents available at this time. Chemical: The herbicide that has proven most effective in rangeland, pasture and other non-crop areas is chlorsulfuron. This herbicide has both soil and foliar activity, and is best applied at the bud to bloom stage. Herbicide applications for the control of perennial pepperweed have to meet stringent requirements when used near open water. Wetland and riparian areas are difficult environments in which to apply herbicide. Herbicides should be chosen carefully. When choosing any kind of control method, assure that your choice is suited for your particular situation. Always read and follow the product label before applying any herbicide. | |