David from Ma writes
Yes, Prograss EC Herbicide is labeled to treat annual bluegrass in the following turfgrasses safely: on bermudagrass (dormant, overseeded with ryegrass), creeping bentgrass, Kentucky bluegrass, ryegrass, turf-type tall fescue and St. Augustinegrass (established). Please refer to the product label for complete application instructions and timing.
Answer last updated on: 05/16/2015