Container Gardening - Knowledgebase Question

Orting, WA
Avatar for Elkhorn2
Question by Elkhorn2
February 21, 1998
I'm going to put planter boxes on a spot that has lawn. Do I have to remove the grass and moss under the box and dig the soil before I can set the boxes up? I plan on using 1x12 boards, 6ft long. Should I use 2x12 boards?

Answer from NGA
February 21, 1998
If you place boxes over existing lawn and moss, there may be problems with drainage because the grass will act as a barrier. To be on the safe side, rototil or dig the area first. It isn't necessary to remove the grass, just break up the area so the new soil and the old soil will mix a little when you fill the boxes. You can use 1x12's but if your boxes will be three or more feet high, 2x12's will be more rigid and won't have a tendancy to bow outwards when filled with soil.

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