This easy to use, 2-part fertilizer system for the home gardener has been developed by Masterblend using the same technical grade fertilizer used by professional growers for decades. The kit contains two parts to be mixed together in water resulting in the ultimate formula for amazing tomatoes and vegetables. The first component is our popular water-soluble 4-18-38 formula pre-mixed with Epsom salts – for a final NPK formulation of 5-12-25. The second is Calcium Nitrate, for full and fast absorption of nutrients by the plant. Combine these two formulas with water according to the directions and you have pure nutrition your garden vegetables will love.