Roots Organics HPK Bloom Booster

NPK:  0–5–4

Developed by Aurora Innovations, Roots Organics HPK bloom booster is a specially extracted natural source of phosphorus and potassium to maximize yields and flavors. 

This organic liquid nutrient supplement is formulated with bat guano, which is renowned as an unparalleled source of available natural phosphorus, combined with langbeinite, which is a natural source of potassium mined from ancient sea beds in the desert of the American Southwest.

Carefully collected from specific global sources, Roots Organics HPK Bat Guano and K-Mag is minimally processed to preserve all of the benefits and synergistic qualities found in their natural ingredients.

HPK Bloom Booster is incredibly effective in improving flower quality in both soil and hydroponics applications.

Application Rate: Once your plants begin to flower, use 2 teaspoons HPK per gallon of nutrient solution.

Manufacturer's feeding schedule (PDF format - Lots of detail.)