Larger sites may take much longer but results from tests elsewhere in the country show the beetle is very effective. The only limitation to date is that Galerucella does not seem to spread to new sites quickly, so it's necessary to start new colonies of Galerucella beetles in as many stands of purple loosestrife as possible to successfully control the plant. Hungry beetles devour loosestrife foliage and prevent the plant from flowering. Some citizen groups have already helped with this work, but more volunteers will be needed to control loosestrife statewide. DNR researchers are ready to help volunteers learn how to raise Galerucella in a beetle nursery, identify loosestrife stands, learn when to release beetles, and monitor progress.
All tasks are easy and require little time.
It's a great community project for wetland enthusiasts and for teachers who want to provide students with meaningful outdoor studies that provide a community service. DNR researchers are working with other states to develop classroom materials to make it easier for teachers to consider such a project. Once a group rears beetles successfully, its program can continue DNR guidance. Last year three such groups raised and released beetles. Several more have already raised beetles this summer.