First year i got early blight in my greenhouse and containers that were standing initially in GH.
Question: is it possible that i got virus from Miracle grow soil that i used in containers?
Blight is a fungus, not a virus.
No, you didn't get it from the potting mix.
The fungus is airborne.
But it stays and overwinter in soil. Right?
I understood that i need to clean soil in my GH this winter. Not sure what to do about soil in containers, can i add it to compost or not?