Posted: 29/08/2014 at 19:56
Mark........for your Begonias you don't necessarily need to keep them potted. Once all the top growth has died back, you can lift the tubers/corms , dry them off, give a quick dusting with Sulphur powder and then store in cool, dry place until Spring just in paper bags or in containers with dry sand, compost or sawdust - the key is dry and frost free.
This method is really only for tender bulbs/tubers. Those that are hardy ( daffs, etc. ) you can leave in situ. Although if space is at a premium, you can treat hardy bulbs in the same manner as above and repot/replant next year but better left in the ground if you can.