General Hydroponics KoolBloom powder is a highly concentrated nutrient additive that promotes abundant flowering and helps facilitate ripening in annual flowers and herbs. KoolBloom is designed to be used during the second half of reproductive growth. It enhances the production of essential oils & fragrance in flowers and herbs. Now packaged in re-sealable foil pouches. Included in the pouches are measuring spoons for easy application. The pouches have a flat bottom on them which allows for the package to easily sit upright on shelves or any other flat surface.