Orchid Pro 7-8-6 is a well-balanced, professional formulation containing all essential macro and micro nutrients for use on all types of orchids. It provides the right balance of nutrients for healthy growth and flowering. Urea free, Orchid Pro may be used for orchid growth in both indoor and outdoor settings as well as with direct or indirect lighting. Bombotany exclusively uses Dyna-Gro’s line of fertilizer products in our greenhouse. Depending on usage, these 8 Oz bottles of fertilizer are enough to mix about 16 gallons of solution for plant maintenance applications.