We can pack a lot of intensively planted veggies in the 4’ x 40’ bed. To minimize the soil need, we filled the bed with tree branches in Horticulture fashion and capped them with topsoil. As the branches decompose and the soil settles we’ll just top the bed off with our farm comp...
Create sheet mulch by overlapping clean cardboard sheets on top of the soil in your garden. After laying the cardboard, water it to help kick off the decomposition process. Then, cover the cardboard with compost or topsoil. You also can shred your cardboard and spread it around your plants...