However, they do have amazing healing powers. If you cut a worm in half, both sides will continue wiggling. The portion with the head may grow a new tail if the cut is after the segments that contain vital organs. The tail portion will continue to wiggle until the nerve cells die. The tail end will not grow a new head.
Worm castings contain nitrogen and other nutrients necessary for plant growth.
When added to soil, worm compost increases nutrient availability and improves soil structure and drainage. Transplant a few plants, seedlings or seeds in a potting mix with worm compost added, and transplant other plants or seeds into pure potting mix. Observe what plants grow the best, and try to explain why. In addition to making soil, worms are natural soil tillers. They mix layers of soil while producing tunnels in the soil to help air and water to reach plant roots.