If you want the highest quality fruits and flowers, CANNA PK 13/14 is the right product for you. CANNA PK 13/14 is a mixture of top quality nutritional minerals that are required during flowering. It's easy to use and can support high yields. If you add PK 13/14 at the right moment, you will get astonishing results! PK 13/14 is suitable for any growing medium.