From Jack's Classic:
One of two liquid orchid products from JR PETERS INC, is Jack's Classic 3-9-6. Orchid Blossom Booster is used to promote enhanced flowering in both color and size of bloom.
This product is easy to mix and use. Orchid Blossom Booster contains not only major and minor elements but also calcium and magnesium, which is essential when using rain water, reverse osmosis water and relatively pure waters for growing. When used in conjunction with the Jack's Classic Orchid Blossom Booster 7-5-6, it is the perfect system to keep your orchids producing excellent leaves and blooms throughout the year.