advice on winter cloche materials?
I'm thinking of making a largish cloche for my school gardening club so we can try and grow some winter veg and bring things on a bit faster (kids get very impatient and it's good to be able to see things grow). I've got some frame bits left over from an old linkabord kit I bought years ago, but my question is what to cover it with. Because I'm only there once a week, it needs to be pretty wind-proof, and we get very strong winds (we're on the south coast). I think ordinary plastic would get swept away - but would something permeable work? Is there something that would let the light in but protect the crops? Nothing expensive! Thank you very much!