The depth of the bed can vary, but 6 inches of soil should be the minimum. Most garden plants need at least 6 to 12 inches for their roots, so 12 inches is ideal.
Raised Garden Beds Height ComparisonsSoil Depth RequirementsHeight of. . Plants with deeper roots, such as tomatoes, would not do well in this soil depth.
Depending on how high your raised beds are, the subsoil underneath may not be. into the soil, one at a time, until you work the whole thing in deep enough.
Deeply rooted plants to be planted in the raised bed will need to penetrate the soil. Gardening expert Patti Moreno shares five tips for growing tomatoes and .
Tomatoes are deep drinkers. Roots of plants in a raised bed will need to penetrate the soil below. Most vegetables grow beautifully in 12-inch deep beds, but .