Turfgrass Weed Control Database
The Turfgrass Weed Control Database contains the same information and pictures included in the Miscellaneous Publication MP-521. The weeds are arranged alphabetically by scientific name because common names vary and thus be inaccurate.
Prostrate Knotweed, Polygonum aviculare
Metsulfuron at 0.5 oz per acre or dicamba (Banvel, Vanquish) at 0.5 lb per acre will control prostrate knotweed. Celsius WG (thiencarbazone + iodosulfuron + dicamba) should be effective on lespedeza. There are many combination products that contain 2, 4-D and dicamba including Trimec 992 and Speedzone.