restoration of knot weed infested areas
I have been trying to get rid of knot weed through injection and spraying. After a few years of this I would like to try and plant some hardy, fast growing grass in the more level areas and on some steeper grades some kind of shrub or thick cover to help with erosion. Do you have any suggestions for grasses and shrubs for restoration of these areas? I plan on trying to spot treat the shoots of knotweed as they reappear and maybe in the fall before frost retreat any larger patches of knotweed that I missed last year.
St. Louis County Minnesota
Hello and thank you for contacting AaE.
Treating knotweed is a multi-year project that I'm very familiar with and I commend you for your effort. Retreating is best before they flower and set seeds. But if you want to wait until fall, you could keep an eye out for flowers and cut them off before they set seeds.