Roots Organics HPK (0–4–3) liquid bloom booster is a specially extracted natural source of phosphorus and potassium. Bat guano, which is renowned as an unparalleled source of available natural phosphorus, is combined with langbeinite, which is a natural source of potassium, carefully mined from ancient sea beds in the desert of the American Southwest. Aurora Innovations has taken generations of gardening experience and distilled it into a distinctive, easy-to-use formula. Carefully collected from specific global sources, Roots Organics HPK is minimally processed to preserve all of the benefits and amazing synergistic qualities found in these exceptional ingredients.
- Derived from seabird guano, bat guano and Langbeinite
- Added potassium compared to HP2
- Good source of phosphorus and potassium