How big a pot for an Olive Tree?
I live about a mile from the sea in south central England. I have recently been given an Olive Tree in a 12-inch square wooden planter. The planter has seen much better days (i.e. is falling to pieces) and I am going to have to re-pot the olive quite soon. The tree is now too big and heavy to be taken indoors for the winter, I don't have 12ft high ceilings. What size pot or planter should I move it into? Planting in the open ground in a fairly unshaded but sheltered part of a North facing garden might be an option, but a south facing aspect could be difficult to achieve.