Image by Alexander Schimmeck

Cultivating Knowledge

Biological Inoculant Or Snake Oil?


When an Organic fertilizer, potting soil or microbial amendment claims to have one or more species of beneficial microbes, particularly “Mycorrhizal Fungi” in the mix, can you be confident that the biology is there, alive and at the levels of “propagules”, “spores” or “colony forming units” reported on the label? Until now, it has been difficult to v