Foliar feeding is the most efficent method for fertilizing a plant. John's Recipe Liquid Fertilizer is ideal for flowers, vegetables, fruits, shrubs, herbs, houseplants, roses, and trees. Ingredients include fish emulsion, seaweed, molasses, humic acid, magnesium chloride*, ferrious sulphate*, zinc chloride*. * source Medina Soil Activator. Blend 2 tbs to one gallon of water for mature plants and general maintaince and 3 tbs for trees, roses, and shrubs. One gallon of concentrate makes 128 ready to use gallons. 3.0-1.5-2.0