Tillage radish is a  cover crop I had never heard of until this summer. One of the amazing things about the tillage radish is its rapid growth. After my neighbor Rol harvested his garlic he planted this bed to tillage radishes in mid-July. Already the wide row is completely covered with lush foliage that will die down once we have a killing frost.  The long daikon radish roots that have developed will also rot over the course of…