Earthworms are exceptionally valuable builders of healthy, fertile topsoil. Jill Clapperton stated that a good sign of a healthy topsoil was that a “shovel-full of soil” should have 8 earthworms in it. In my field diggings I have found anywhere from ZERO to 10 erathworms per shovel-full. I found 10 in crimson clover, 8 in annual ryegrass, 7 in my Austrian winter peas, 10 in my annual ryegrass/crimson clover mix and ZERO where I had no cover crop.
Earthworms recycle nutrients and encourage soil aeration, porosity, and percolation. As earthworms multiply so does the opportunity to have healthy soils.
