“Healthy soil is alive and it’s free of contaminants, pollutants,” he says. “If you go out into a forest, forests are our most productive ecosystem [with] no disease [and] no pest control problems. Pick up a handful of soil; there are 6 trillion microbes in that handful. So, that’s what we want in our yards and gardens. If we get the soil alive like that the problems go away or greatly diminish.”