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?

Answer from NGA
May 15, 2009


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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