I fertilize mine all winter as I keep them in the basement where it stays around 70 but they are getting far to heavy for me to move them up and down a lot of steps, so this will be my last year for overwintering, I want to see a couple of new ones bloom first then I will start depleteing what I have, I have about 15 seedlings started so I will not get to see them bloom unless they grow super fast
and my larger ones I will do cuttings, some I will try to send the whole plant, I just hate cutting them up then have to throw the root away.