Sometimes, things are so well written, it would be a dis-service to paraphrase them. I ran across this page on Mycorrhizal Fungi and thought it was great info. So, here is a link to it: . Mycorrhiza - Wikipedia, the free encyclopedia . Give it a read. Afterwards, you will have a better understanding of why these myco fungi - sold in products like Plant Sucess, Myco Magic, Sub-Culture and Super Plant Tonic - kick such serious a*s. . Add them in your grow and reap the benefits. These little fungi, mine out every last bit of P for Mary - so her buddage reaches maximum potential. . They also pump up the plants immune system by making all the necessary trace minerals soluble and kill off bad bacteria as a bonus. It's a win / win formula. So, next time someone says " There's a fungus among us - Say Cool, I was hopeing for some. " . Keep it Real...Organic..... .