Q: My yard is infested with crabgrass. How did it get all through the lawn so quickly? I've used a number of products, and it's still flourishing. What can I do? My lawn has been ruined by the ...

Dallisgrass, otherwise known as Paspalum dilitatum, is a fast-growing, clump-forming, perennial weed. It crops up in lawns, particularly in southern states, and is notoriously tricky to control, ...