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Use of plastic mulch in polytunnel for moisture control

Posted: Wed Jan 13, 2016 6:34 pm
by mr-cecil
I'm thinking about how I can keep my crops suitably watered in my new polytunnel and it I'm wondering if there is any mileage in planting through plastic.
I've done this outside as it keep moisture in, however, I've never seen anyone suggest this as a solution in a polytunnel or greenhouse. Does anybody know if there is a reason why this wouldn't help?