I'm a back garden veggie grower, this year coming will be my fourth season, and basically last year was a complete disaster, mainly because of my cat! :( No matter what I tried she used my beds as a toilet! I'd quite like to cover the beds I have with a large full-height polytunnel, and extend my growing room by making more beds widthways on the other side of the tunnel. Can you grow anything in a tunnel, or does it only have it's uses at the beggining and end of the season? I'll have to grow in it all year if I get one. The crops I grow are cabbage, broccoli, leeks, onions, lettuce, spring onions, rocket, carrots, parsnips and sweetcorn. Are any of these not suitable for growing in a tunnel? These are the crops most plagued by my cat. My spuds, strawberries and tomatoes can stay outside as they cat doesn't bother them.