The Right Stuff dramatically improves soils to promote plant establishment and it also accelerates grouth. Natural, organic meals nurture your soils, help build a more sustainable growing medium and feed your plants. But along with kelp, fish, crab and alfalfa meals, the Right Stuff contains proprietary microbiology: Naturally occurring microorganisms that acceleration the conversion or organic matter into high quality hums while releasing minerals and nutrients to the plant. The result is superior plant growth and vigo, higher quality and yield. 50# Bag