2 Ounce Bromeliad Tillandsia Fertilizer. Treats up to 8 gallons! Premium bromeliad/tillandsia food. Specially formulated for Tillandsias/Air Plants and Bromeliads. The 2 ounce portion is perfect if you have a small collection or a few orbs. You should feed your plants twice a month in warm weather. A 1/2 teaspoon of airplant food diluted in 1/2 gallon water will be plenty to treat a small collection. This portion has 16 1/2 teaspoon portions in it-that's enough to last you 8 months! *Blue measuring spoon not included with 2oz. portion.