- 100% Natural and Organic Fertilizer
- Enhances color on blooms and foliage
- Excellent for Roses and other plants.
E.B.Stone Naturals Sul-Po-Mag is a naturally occurring crystalline material known as langbeinite. It is an excellent source of readily available Sulfur, Potassium and Magnesium. Potassium encourages root growth and increases plant resistance to disease. Magnesium aids in the green coloring of plants. Sulfur aids in the use of nitrogen fertilizer by the plant and helps lower a soils pH. NPK: 0-0-20 Derived from: Sulfate of Potash Magnesia.