| Herbaceous perennials, such as quackgrass, mugwort, and Canada thistle, die back to the ground each year. |
| In particular, perennial broadleafs and grasses such as dandelion, curly dock, Canada thistle, and quackgrass are much easier to manage prior to planting a forage crop. |
| Fields with quackgrass, Canada thistle, and other cool-season perennial weeds will almost always require the use of glyphosate around the time of planting. |
| Perennial grasses such as bluegrass and quackgrass and broadleaves such as Canada thistle, bindweed, and curly dock also could be addressed with the weed control program. |
| These may be the best teeth for hard or rocky soil and for heavy infestations of quackgrass and other weeds with underground rhizomes. |
| Likewise unwanted grasses like Bermuda, and weeds like dallisgrass and quackgrass that invade a lawn are hard to remove. |
