The Best Raised Garden Bed Raised Bed Soil And Top Soil Mix References. Web there are a few factors to consider when choosing the best soil mixture for raised beds, including the type of plants you’ll be growing, the climate in your area, and the amount of space you have. The ratio of compost to soil will vary depending on the type of raised bed you have and the type of plants you are growing.
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Web the mix i used the first year was 1/2 organic raised bed mix (expensive), 1/4 top soil and 1/4 compost. The bulk of my raised bed soil consists of high quality topsoil, about 50% by volume. Use a soil calculator to determine how many bags of soil you’ll need for the raised bed according to its size











