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Old February 28, 2015   #7
Riceloft
Tomatovillian™
 
Join Date: Sep 2011
Location: Parma, Ohio (6a)
Posts: 299
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I do 4x8 and do fine. 3x12 is probably easier to manage as Worth and others said. Mine are 12" and its just fine. Soil beneath is mostly clay.
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