Bridgewell Agriculture PAR4® AFEORFGRR93750B 9-3-7 Granulated Natural Multi-Purpose Fertilizer 50 lbs - PAR4® 9-3-7 is a granulated, protein-based, multi purpose fertilizer with all essential elements for healthy plant growth. The nitrogen, derived from feather meal releases in concert with your plant’s growth. As they grow faster, more nitrogen is available for uptake. Feather meal is rich in amino acids, the critical building blocks of proteins and strong cell walls. Meat and bone meal supply phosphorous. Potassium sulfate is the potash source. Together these key elements are responsible for fruit and flower development and preventing diseases such as blossom end rot on tomatoes and peppers.