OK you are not going to like what I tell, but it is the truth and fact. Any grass, especially Bermuda will send up seed heads when under stress to preserve itself. It is a defense mechanism. Care to guess what is stressing your grass? You said it in first sentence, drought or thirsty grass from you not watering it.

Other than the dwarf forms of miscanthus (which are very, very nice, but not seed grown), the only other one I can think of is Melica ciliata. You won't find it anywhere, but I have plenty of seed if you would like. 2ft with the flower heads, 1ft without.

I have IT and I just don't have IT IN ME to battle trees AND grass AND thistles over 17 acres. I am hoping that the cycles come around and get it out of here. I see less of it than I saw 5 years ago. I do not know if that is a sign of recycling out and back again. I think the drought knocked it back severely . BUT this could just as easily reverse itself. Meanwhile I need to get up courage , know how and equipment to do a summer burn. Don't hold your breath. Usually summers come with burn bans. There lies another rock in the road..I do notice that during butterfly migrations skippers and other butterflies other than monarchs really do like it.

Need a photo.......pretty much impossible to ID a grass-like plant without one.