I'm sure this has been covered but I want to further emphasize this issue. There's a lot of misinformation surrounding our hobby and one of those is that mycorrhizae can't not live in a synthetic environment.  But what is mycorrhizae actually?  Well in simple terms the associations between roots and fungi are called mycorrhizae. These symbiotic arrangements have been found in about 90% of all land plants, and have been around for approximately 400 million years. Plant roots are hospita