Posted: 07/02/2017 at 18:56
The 'growhouse' covering will definitely help - I've grown melons in a polytunnel and an unheated greenhouse with reasonable success. They do take up a lot of space though and I wouldn't try more than 3 in a bed that size and ideally only 2. If you can provide some support they can be tied-in to it and be grown vertically, but you will then have to support the fruit too (old tights or netting works.) Follow the growing advice carefully about nipping out the shoots etc. or you'll end up with a sprawling mass of vine and leaves with little or no fruit. RHS growing and pruning advice here:
One tip I can give is about when to harvest - use you nose! They smell really sweet when ready.
Good luck if you give them a go.