Hi just joined yesterday and already i have a question about the dendrobium nobile. Bought this from a good friend and it had a lot of canes which have now turned yellow and i have three new canes with good growth. My question is should i get rid of the old canes, should i cut them off, pull them off or what. Should i then repot the plant in new medium and then put it in the conservatory. Any help would be much appreciated, it is my first winter of looking after my plants and i know i will be using the forum for oh so many questions.