The 1 Cubic ft. Grain Fed Worm Casting organic fertilizer made from worm castings. It is designed for use in both indoor and outdoor settings and comes in a convenient bag packaging. This product is ready for use and can be applied in the Summer, Fall, or Spring seasons. With a volume of 7.5 gallons, this all-purpose fertilizer is compatible with a variety of plant types and is made from 100% organic material.