Espoma Organic 6.75 lb. 10-10-10 General Purpose Plant Food. This fast-acting, conventional plant food promotes vigorous growth in all flowering plants and vegetables. It provides all three major plant nutrients (nitrogen, phosphorus, and potassium) in equal amounts, ensuring balanced nutrition for your plants. Ideal for use in the spring, this general-purpose plant food can be used on a variety of plants, including flowers, vegetables, trees, and shrubs. It comes in a 6.75-pound bag and covers an area of 337-450 square feet.