Roots Organics Phos Rock, 3lb NPK / 0 - 7 - 0 DERIVED FROM Phosphate Rock Roots 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 a high quantity of available phosphorous. This guano, due to its soluble phosphorus content is especially helpful during the flowering and fruiting process. APPLICATION RATE Container Gardening / Top Scratch Add 1 tsp (5 ml) per 1 gallon of soil. Add 2 tsp (10 ml) per 5 gallons of soil. Add 1 TBS (15 ml) per 10 gallons of soil. Liquid Application Add 1 TBS (15 ml) per gallon. Mix for 24 to 48 hours and water in direct. Vegetable Gardens and Flower Beds Add 2 - 4 lbs per 100 square feet and mix into soil.