GreenSense Organic Earthworm Castings, 30 lb.
An effective organic fertilizer and excellent source of bacteria, iron, magnesium, sulfur, and over 60 trace elements. Good for potted plants. The manure that these worms are fed comes from rabbits who are fed on an alfalfa meal diet. Application rate: 10 lb. per 1,000 sq. ft. once a year on lawns and once a month on potted plants.