This is one of many kinds of grass that has gone to seed around here. It has a strong scent, I don't know if I can describe it, but it reminds me of molasses but more sour. My dh says it smells musty to him.

Some type of switch grass perhaps?

Thank you Porkpal; I think you have put me in the right direction.

Maybe Panicum virgatum? http://www.wildflower.org/gall...

Looks more like Redtop (Tridens flavus) to me, but would need to see close views of the base of the stems and the leaf blades where they come of the stem to be sure.

Ditto on purple top. I can't get a decent picture of it either... I think it's too pretty to pick...

Yes, that does look more like it. That's what the stem and blades look like too. I'll try and get a pic today.