Starting A Garden
Q.

drainage from garden soil planted on top of concrete?

Zone Winchester, VA 22601 (northern VA) | colonial13 added on March 24, 2014 | Answered

Weight is not the problem, but how and where does the water drain when soil is directly on top of concrete? Also, how deep should I plant my garden surrounded by 2 x 6 boards in a 4' x 8' square? Thanks...Pawley

A.
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theficuswrangler
Answered on March 26, 2014

With concrete underlaying soil, the water will naturally flow toward the lowest area of the concrete and collect there, or flow away, depending on what surrounds the concrete.
Raised beds should have a depth of soil from 6 - 12". This article will help you. https://www.gardeningknowhow.com/edible/vegetables/vgen/raised-vegetable-gardens.htm

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