Harrod Horticultural is where I buy mine from - they sell it by the metre so you can work out how much you need for one bed & just buy that quantity. They do different sizes of mesh/thickness of fleece too. Highly recommended for their service too.

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Sarah

“Tell me one last thing,” said Harry. “Is this real? Or has this been happening inside my head?”
“Of course it is happening inside your head, Harry, but why on earth should that mean that it is not real?”