I'm a master gardener and permaculture specialist, so I pay more attention to what's in my soil than most people. You probably don't give much thought to what's really in your topsoil, aside from ...

Red worms, or Eisenia andrei, are another type of worm known as epigeic. They live in the rich top layer of organic matter, above the mineral soil layer inhabited by endogeic earthworms. These little ...