Potassium sulfate: is a source of both potassium and sulfur. Potassium is responsible for water loss and absorption as well as the ability to endure colder temperatures. Potassium is also necessary in the formation of sugars, starches and carbohydrates needed for protein synthesis and cell division. Potassium is absorbed by plants in mass quantity aids in protein formation, photosynthesis, fruit/flower quality, and disease reduction. Sulfur aids in the production of proteins as well as stimulating the activity and development of vitamins and enzymes. Vigorous plant growth, healthy root zones, a tolerance to cold weather and the formation of Chlorophyll all occur due to sulfur. Sulfate, a form of sulfur helps to buffer PH in water.