Posted: 30/11/2014 at 12:47
I would think almost everybody on this forum has grown an oak tree from an acorn picked up on a walk. They must be the easiest of all the big seeds to germinate. Many of them germinate from acorns buried by birds or squirrels for their winter food.
Your best bet is to liberate it from the pot in your garden or a local park or somewhere it can grow to full height.