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How Tall Should A Raised Garden Bed Be? [Solved]
The most popular height for raised beds is 11″. (This is the height of two standard “2 x 6″ boards, which actually measure 1.5″ x 5.5”.) This height provides sufficient drainage for most crops. For best results, there should be another 12″ or more of good soil below the bed.
How tall should I build my Raised Bed Garden? How high should the soil be?
John from http://www.growingyourgreens.com answers the question
The Perfect Raised Bed Size for High Productivity in Small Spaces
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