Q: I know I should have put out my winter pre emergent by September 15 but I didn’t get around to it. Is there anything I can do to slow down the annual bluegrass that shows up in spring?
A: Imazaquin (Image for Nutgrass) is labeled for use in winter on all grasses except fescueto control annual bluegrass. Since Image must be absorbed by roots, control may not be evident for several weeks. Given that fact, and since bluegrass has already begun germinating, I’d make a herbicide application now.