Jack's Houseplant Fertilizer is designed to effectively promote strong healthy indoor plant, both foliage and blooming. The 15-30-15 formula has been proven an effective source of nutrients for indoor plants for decades. This fertilizer come in an 8 oz air-tight, water-tight container making it easy to store. Simply mix 1/2 Teaspoon per gallon of water every other week for continuous fertilizing for all your indoor plants.