It’s a beast of a weed, creeping north into the Midwest from cotton country. Palmer amaranth can shoot up as high as 7 feet, and just one plant can produce up to a million seeds. Herbicide is increasingly futile against it, and the weed’s thick stems and deep roots make it hard work to clear by hand.
The Minnesota Department of Agriculture is advising homeowners not to compost grass clippings from lawns treated with Imprelis herbicide from DuPont or use the clippings as mulch around trees and gardens.
Have you noticed brown branches on any of your pine trees? If you have, and a lawn service has sprayed your yard for weeds, your trees could be in serious trouble.