Home Outdoors May Weed of the Month: Johnsongrass May Weed of the Month: JohnsongrassMay 16, 2023Outdoors Photo-Caption:Infestation of Johnsongrass along a roadway. By EMILIE JUSTEN Minnesota Department of Agriculture May Weed of the Month: Johnsongrass Johnsongrass is a tall perennial grass that grows up to 8 feet… Login to continue reading Login Sign up for complimentary access Sign Up Now Close Previous Post Library board reads Next Post Reports from Minnesota’s opener Featured Local Savings -