Bonsai Pro 7-9-5 is for bonsai trees which, like all other plants, require N-P-K plus all the other macro and micro nutritional elements to survive. While normal trees are able to broaden their root systems, bonsai are planted in small pots and benefit from frequent, weekly applications of appropriate bonsai fertilizers. Bonsai Pro offers balanced growth throughout the plant’s life, which can be affected by temperature, light, soil, pruning, watering, and root structure. 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 32 gallons of solution for plant maintenance applications.