most of the other plectranthus I grew always over wintered great.. my neighbor had a nursery pot with a plant I gave her that prior spring.. we had that nasty snow storm last year.. power outage.. for 8 days .. it lived just fine in her unheated garage .. strong buggers for sure.. she went to florida in January.. came back in April.. the poor thing only had water gels and a tiny bit of light through the garage door... and it lived until she came home.. granted it looked leggy and hurting.. but she brought it back in the house and it looks great again.. totally impressive
and most root just like a coleus .. pop a piece off and stick in soil.. good to go.. the only one I found so far that was hard to root was Plectranthus parviflorus 'Sapphire Dream' .. it's hit & miss but I managed to get a few pieces to survive since last year
