Jobe's Organics, 4 LB, 5-4-3, Holly Food Granular Fertilizer With Biozome, Provides Your Acid Loving Plants The Nutrients They Need To Create Abundant Blooms, Biozome Is A Unique & Proprietary Blend Of Beneficial Microorganisms That Improve Long Term Soil Quality By Adding Beneficial Microbes That Naturally Re-Establish A Balance Between Plant & Soil, Omri Listed For Organic Gardening & Contains No Harmful Chemicals That Could Harm Plants, People, Or Pets, Apply Every 4-6 Weeks As Needed.