Roots Organics Green Fields Potting Soil Mix is a high-nitrogen mix for both the vegetative and flowering phases of mature plants. It is a super-premium, ready to use outdoor planting mix with ocean ingredients for fast growing, heavy-feeding plants. It was designed with greater water-holding capacity, less perlite and pumice and specific ingredients like fish and crab meal, worm castings, bat guano, kelp meal and much more. Experienced gardeners know that a perfect outdoor mix is very different than a perfect indoor mix and the Green Fields mix has been tested and proven as an excellent outdoor blend. Green Fields Potting Soil Mix is designed specifically for large containers, large holes and large plants.