Amount of soil in Planter Boxes - Knowledgebase Question

San Leandro, CA
Avatar for usheimat
Question by usheimat
May 18, 2007
The guy doing our landscaping advised us to not fill the wooden planters up to the rim with top soil (we want to grow vegetables) but to keep the soil 2-3 inches below the top rim. Is there a valid reason for doing this, or does he just want to save money (we agreed on a fixed amount for landscaping services).
Thanks very much for any input.

Answer from NGA
May 18, 2007
Your landscaper is right - leaving some "head space" will allow for deep watering (simply flood the boxes with water up to the top of the sides and allow it to trickle down to fully saturate the soil). If you don't like the look of 2-3" of wood showing, you can add an organic mulch (peat, spaghnum moss, etc.) all the way up to the top. The organic mulch will cover the bare soil but will still allow watering space and allow good water penetration.

Best wishes with your new planter boxes.

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