Used primarily for good drainage, this above - ground system uses bricks, blocks, logs, or wood planks to contain the garden above the usual soil level. (fieryfoodscentral.com)
Another advantage bioenergy grasses and switchgrasses have over corn is their deep root system which allows them to draw water and nutrients from deeper soil levels and allows them to be more resilient in poor growing seasons. (sciencedaily.com)
Due to depleted soil levels of magnesium and use of synthetic fertilizers, many of us don't get enough magnesium. (wellnessmama.com)