INCREASES YIELDS CANNA PK 13/14 is a mixture of top quality nutritional minerals that stimulate flowering. This product has been developed for the flowering phase of fast growing plants. PK 13/14 is easy to use and high yields are easily achieved. PURE ELEMENTS TO STIMULATE FLOWERING PK 13/14 is a high grade mixture of phosphorus and potassium that is added during the flowering phase. Both elements play a big role during the flowering phase of fast growing plants. Thanks to a special production process CANNA has succeeded in combining pure phosphorous and potassium in very high concentrations and this makes PK 13/14 available to the plant quickly and directly.