The first Vermitechnology Unlimited worm farm was constructed on a five-acre parcel with large oaks and scattered pines to utilize the natural environment. This farm has a total of 3,000 linear feet of worm beds that produce an average of 3100 lbs. worm castings each month.Vermitechnology’s pure worm Black Castings™ are just that – pure worm castings. There are no variables. Each bag, consistently delivers high-quality Black Castings batch after batch. Vermitechnology worm castings are an excellent amendment to any fertilizing program for organic potting soil growers and perfect for boosting growth in raised garden beds or traditional gardeners.