I found this site, but I'm not sure if it's reputable
If it is, is it at a good price? Should I buy the thicker gauge ones? Or should I look somewhere else?
Did you look at Amazon.com?
I have no idea what guage you need. I am working with 2mil Mylar and it is holding up ok, but your own experience may vary.
agreed I just ordered a 12 pack of mylar blankets; because ordering any less ends up with shipping costing more than the blankets. I just used clear tape over the edges where it could rip.
Those mylar blankets are available in the sports dept. at any WalMart store.
Could you use the mylar blankets and just cut them up to fit the size of a plant you want to protect from cold/frosts? Might be good if you could. Also, I'm worried because the mylar that I saw at walmart was full of harmful chemicals or carcinogens, I forgot which ones, but it said some kind of warning on it.