Is this the first winter?

I thought about this idea. I have a friend who grows organic vegetable for local whole food market. He told me he tried this method one year, but PVC pipes broke after one winter.

I know lot of plastic stuff will break under summer sun for one summer.

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• 回复：Is this the first winter? -北方农民- ♂ (769 bytes) () 11/26/2009 postreply 07:27:45