We are trying to identify & treat this grassy weed in our lawn that has been spreading aggressively this year. Originally we though it was crab grass, but from the looks of it this Spring we think it is some type of undesirable grass like annual bluegrass which apparently germinates later in the season that crabgrass. Any help on identifying this weed or how to eliminate it would be greatly appreciated!!! The patches are a lighter green than the rest of the lawn and we can see seed heads forming now but not quite spread yet. We did reseed last fall and especially watering sections where this weed had been spot treated and removed, so I think we might have encouraged it's germination/spreading.