I don't know why, but the first post did not upload the pict.

What kind of grass did you use? Do you still have the bag/box? We're looking for the seeds listed in the Guaranteed Analysis on the bag.

Or... what did it look like before? Can't tell from your post how well things popped (or not), or if what we're seeing is the remnants of a roundup job taking hold in warmer weather (common). How did set up your job? This will make a difference.