Derived from multiple sources of phosphorus and potassium, PK spike is designed to help facilitate bulking and ripening of many flowering plants.
PK Spike is engineered to provide a uniform quantity of phosphorus and potassium to your flowering plants. Designed with over 25% more P/K than the next industry leading competitor, this product can be applied at a maximum rate of 1.0 ml/L to achieve a 250 ppm boost to your plants.
Green Planet – PK Spike (0-14-15) PK Spike is formulated to provide a uniform quantity of phosphorus and potassium to your flowering plants. Designed with over 25% more P/K than the next industry leading brand, this product can be applied at a maximum rate of 1 mL/L to achieve a 250 ppm P/K spike to your plants. Use: Begin use in week 2 of flowering cycle
PK Spike is our flowering supplement derived from multiple, highly soluble sources of phosphorous and potassium. This product is designed to encourage budding, help facilitate bulking, and ripening of flowering plants.

Improved flower formation and seed production.
Earlier and more uniform crop maturity.
Improvements in crop quality.
Along with phosphate, potash is instrumental in starch and carbohydrate synthesis, which is essential in the development of large and healthy photosynthesis organs.
A potash deficiency may lead to reduced cell wall strength, which can lead to the breaking of stems, leafs, and susceptibility to the toppling over and breaking of heavy branches.
Phosphate deficient plants take longer to initiate flowering, produce fewer flowers, and are restricted in flower size.
Phosphate deficiencies can result in a reduction in leaf expansion and also the number of leafs.