Does that mean they are ruined if the tops froze? I'm assuming the three containers I have seed potatoes in are okay since everything else was. Those three containers were under a quilt with other plants. I don't know where one buys moving quilts but I'd get two or three more if I can find them - oh, wait, Amazon has everything in the world. I wonder if those are expensive? Those were the easiest to use to cover plants and they are thick ‘cause they are quilted. I don't know how I ended up with moving quilts - it had to be movers leaving them and I didn't find them until later.
If you have moving blankets from a moving company, there is small chance that you would find a similar quality at any affordable price. But, if you want some economy blankets, up to industrial, try this:
http://www.northerntool.com/shop/tools/category_material-handling+moving-blankets?
They have a store at 336/I-45 by your house. I would call first because the store does not stock every item in the catalog. But if they have some, you can look and touch before buying.
I should have noted that they have free ship to the store, I think, and the nice people there will surely carry them to your car for you.
No, they're not ruined as the soil didn't freeze. They'll just send up new shoots.