I have a medium sized (about 40cm diameter) lavender plant in the garden that I'd like to dig up and re-plant in a pot in my courtyard. I know that lavender is a very hardy thing, but would a move like this be a silly thing to do to it once it's reached this sort of size? It's the beginning of winter here so I guess that if I'm going to move it, then now is the best time, before the spring growth kicks in.
Any advice appreciated