Mammoth P - 1 GallonMammoth P is the product you need to maximize phosphorus cycling. Boosting your phosphorus cycling can increase growth and yield! Plus, we ensure that every Mammoth product delivers huge benefits. Mammoth P is a bloom booster and a bio stimulant. Mammoth P microbes directly and specifically target phosphorus to cycle and increase its bioavailability. Increasing the plants access to Phosphorus is hugely important because Phosphorus is a macronutrient