Posted: 06/03/2016 at 09:48
The short answer is - you need a greenhouse to move things into.
The plastic ones offer very little protection in our northern climate Stephanie. It's why I don't sow anything too early, and I don't sow much.
If you're living in a more benign, southerly climate where the season's longer, they're not so bad. Up here, you definitely need a greenhouse if you sow lots of stuff. If you're at height, like B'cupdays, the same applies, as she has said. You have to work with your own conditions