Purple loosestrife is native to Europe and Asia where insects and diseases native to that area have kept it in check. It was introduced to North America in the 1800’s and has spread to 40 states, including Wisconsin.
Purple loosestrife is extremely invasive. It overtakes natural habitat and literally chokes out the native vegetation. Wildlife that depend on the native vegetation for food or shelter are forced out because loosestrife provides little food or habitat for native wildlife species.
Purple loosestrife can be found in a wide variety of sites from moist soil to shallow water and specifically near or in marshes, wetlands, streams, rivers, or lakes.
Purple loosestrife can be controlled using mechanical, chemical, and biological means. Chemical treatment using herbicides requires a certified pesticide applicator and a Wisconsin DNR permit. David Sweeney is a certified pesticide applicator, and we apply for the permit for you. DNR permit fees are waived for controlling purple loosestrife.
Pictures are provided below for identification.