Roots Organics Phos Rock Bat Guano 0-7-0Roots Organics Phos Rock is an excellent source of phosphorus and calcium. Carefully processed and sifted to make it easy to work with, Roots Organics Phos Rock encourages vigorous flowering and fruiting. All of the Roots Organics guanos have been sourced for quality and harvested with bat friendly methods so you and your garden get performance with principles. Phos Rock has been specially selected (and harvested using bat friendly methods) to contain