cold frames
 

Hello all,
I am new to this newsgroup, in fact to any newsgroup. Can anyone advise the
pro and cons of cold frames. I have seen aluminium frames with
horticultural glass or polycarbonate 'glass' for sides and top, and
traditional wood sides with glass or polycarbonate tops. All similar sizes
and prices. Has anyone any experience with either one or the other. I live
in the North West of England and have just taken on an extremely overgrown
allotment.
Ann