King's Mix for Trees & Fruiting Plants | HortKing Organic Living SoilGrow healthier plants, increase yields, and produce better tasting produce with HortKing Organic Living Soil. HortKing Organic Living Soil is a revolutionary new way to grow plants. It is teeming with beneficial microbes that work together to create a healthy and productive environment for your plants. Organic living soil is made from a variety of organic ingredients, such as composts, worm castings, and amended with HortKing NutriBalance, a bio