Soil Mixture for raised veggie garden - Knowledgebase Question

Colorado Springs, Co
Question by jtmoses2001
May 15, 2009
We are planning a raised garden, 8 feet long by 3 feet wide by 2 feet deep. What is the best mixture for the soil? We have topsoil, vegetable garden soil, and compost. How much will we need of each component?


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Answer from NGA
May 15, 2009

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Most topsoils contain garden soil, organic matter such as compost, and builder's sand. Garden soil generally has only clay, sand and silt. I would use top soil to fill the raised bed and then spread 4-5 inches of compost over the top, mixing it in to a depth of 8-10 inches. Then level the soil and plant. After planting, spread another 2-3 inches of compost over the bare soil to help suppress weeds and slow evaporation. At the end of the season you can dig this mulch into the soil and add a fresh layer. After several years of this process you will have rich garden loam. Best wishes with your garden!

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