Im in the fortunate recipt of a wisteria plant. Its currently about 22inches high and growing in a clay pot. Looks very healthy and strong. I have an out-building which we converted with a vine growing down one end. The other end is a clear wall and I would love to grow it in the ground along and round the door. However the building is quite old and Ive been told no way to grow it anywhere near it. So, Im thinking in a large pot by the wall and train it up and along. If I do this what size/type of container? And if I put the pot on the corner could I train it to grow either way down the wall? Thankyou in advance for your time.