Has anyone tried adding ericoid mycorrhizal fungi to their blueberries? I've read that blueberries require a symbiotic relationship with these fungi (in their roots) in order to really thrive. Has anyone tried this? I have no way to know if my soil already contains this family of fungi or not.
I found one etailer who Ericoid Mycorrhizae for $37/8oz, and was wondering if it is worth it.