HPK 1 GALLON
SKU: ROHPKG
$35.99Price
Roots Organics HPK liquid bloom booster features a combination of seabird guano and phosphate rock, renowned as unparalleled reserves of available phosphorus, combined with langbeinite, a powerful source of potassium and magnesium that is carefully mined from ancient sea beds in the desert of the American Southwest.
DERIVED FROM:
Seabird guano, phosphate rock, and langbeinite