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Old December 18, 2013   #36
Join Date: Feb 2013
Location: Brantford, ON, Canada
Posts: 1,328

Originally Posted by NathanP View Post
One thing I have heard that might help is mixing the soil with sawdust. Because it is lighter, it would decrease the pressure, and unlike straw, potatoes will root in sawdust. I have tried straw and the stems will not develop roots and stolons in straw.
There is absolutely no reason to place the soil high, hence no weight. The new tubers need only be covered. Never has there been any new tubers along the main stem. That is what this whole exercise is about.
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