Crafted for Organic Gardening™ ( 0 - 0.5 - 0.7 ) Our micro-brewed formula incorporates earthworm castings, bat guano and ingredients such as Norwegian kelp, which supplies micronutrients, and rock phosphate that helps transfer energy from one part of the plant to another. OMRI Listed® and Registered CDFA Organic Input Material. Garden tip: Big Bloom® is formulated for all fruiting and flowering plants, and it can be used every time you water. When a plant is struggling, a root drench of Big Bloom® may help to perk things up.