Jack's 15-16-17 is a nice variation of Geranium Special 15-15-15 with slightly elevated micro nutients. With a ratio similar to 20-20-20 but with over 60% nitrate nitrogen, boosted micronutrient levels, and much less acidic reaction in the root media. The balanced N-P-K ratio is excellent for producing fast-growing plants or for maintaining plants in a sales environment.
For use on: All plants, especially our friend, the geranium. More importantly, a great choice when trying to maintain finished plants in a garden center.