This fertilizer is a premixed, ready to use nitrogen blend, no calculating and mixing needed! Blended for Tillandsias (air plants) so there is never a fear that you are over fertilizing, simply follow the instructions on the label. Comes in an easy to use mister bottle. Fertilizer promotes healthy plants and encourages growth and blooming for happy, healthy plants. Air plant blooms are truly a joy to experience! When empty reuse as an air plant mister for watering your plants!