Winter is rapidly approaching in zone 4 and I have started to prepare for next season by using one of my favorite soil enhancements. Worm castings are an eco-friendly way to add necessary nutrients to your soil. The castings can improve soil structure, aeration and drainage. When mixed with your current soil the castings will provide the beneficial bacteria and microbes to help sustain plant life. The castings are also capable of correcting soil deficiencies, promoting plant hardiness and disease resistance. Cheers