Grow More Premium Orchid Fertilizer Combo: Grow (1 Pound) and Bloom (1.25 Pounds) Use the Growth Formula fertilizer to feed your Cymbidiums and any orchids that require a high nitrogen plant food during its growing season (usually from February thru September). Use the Bloom Formula fertilizer to help initiate flower spike development while your orchids are in the dormant stage (usually from September through February). Recommended for all slab-mounted epiphytic orchids, those with exposed root systems and terrestrial orchids in a soil potting mixture. Use also for gravel or inorganic culture. Grow More fertilizers must be dissolved in water before use. Dissolve 1 teaspoon per gallon of water. Use hose-end proportioners, sprinkler can, or bucket to apply water copiously to saturate bark or other potting media every 10 days or 2 weeks. Pre-water plants the day before if soil or bark is dry. NPK: Growth (30-10-10), Bloom (6-30-30)