I know that bacterial counts in arctic soils is surprisingly low, but virus and viroids are surprisingly high. In southern soils there is more of a balance. Virus tends to be fine in extreme temps. Both bacteria and Fungi are more species dependent on tolerances. Psilocibins will grow in FL and GA but not TN or SC. I get Morels here, but not in Florida. In TN I have not seen any mycos overwintering although I inoculated most of my perennials, I blame the freezes we get. I need to look some of this up. If there are more temperature hardy mycos available that would be great. Around here the woodsy mycos survive, but not in field conditions.