My plastic walk in greenhouse blew away. This caused a lot of heartache as it was full of seedlings at the time. I wouldnt recommend them, but if you want to take the risk, make sure it is very securely anchored down, not just at the bottom but from the top also. Mine was secured at the bottom only and all the plastic joints snapped, I was just left with the bottom poles still held down and the rest was halfway up the garden.

Good luck.

Tracy