In my particular instances I've found that nitrifying bacteria to kick off cycling are not as sensitive to the cold as the charts and books would have us think. I went for it too see what would happen and am glad that I did. (These were fishless cycles just so you know).
Okay, great I think I'll get started then, lol! It makes sense. Wouldn't they be adapted to the climate?
Bacteria growth below 60 degrees slows dramatically. It will cycle but it will take a long time.