I am not sure if this question belongs here but here it goes.
Last fall we have decided to overwinter our cascading lobelia because it was such a beautiful and fairly compact plant. We are in zone 6b in Ontario. It is doing quite well in our sunroom that has a day temperature of 21Ã¯Â¿Â½C and 16Ã¯Â¿Â½C at night.
My question is do I prune the plant before I take it out in spring? If so, how much, when and do I prune roots as well? Any advice will be appreciated.