Dallisgrass is one of the most difficult to control weeds. Multiple herbicide applications over a two-year period are required to get rid of dallisgrass. The longer you have it, the more difficult it is to control. Dallisgrass is coarse in texture and clumps together. It spreads from short, thick rhizomes and seeds. Dallisgrass is easily identifiable and we suggest you contact us to get rid of this pesky grassy weed.