Worms are good for the garden soil for many reasons. Unparalleled as soil excavators, earthworms spend their lives ingesting, grinding, digesting and excreting soil–as much as 15 tons per acre goes through earthworms bodies in a year. These “worm castings” are richer in nutrients and bacteria than the surrounding soil. Their underground burrows also create channels in the soils, which makes the soil more porous, allowing water to move to greater depths in the soil column. Worm burrows also allows for drainage after heavy rains reducing erosion. Join Philip Keitany and Peter Kanyagia to understand more about Vermiculture.