CANNA 9311001 PK 13/14 1-liter 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. When given during the flowering phase, CANNA PK 13/14 will satisfy the flowering plants increased needs and the fruits will achieve maximum development. Can be used with every type of medium.