Hello - we obtained a small oak tree from our city and have been keeping it in a somewhat large pot. During the winter we place it in the garage, and bring it back outside when the night weather is above freezing.
We have had it for about 3 years and it is 13 inches tall, with plenty of big, healthy leaves.
We were wondering if we should put it in a larger container, and when we should transplant it into the garden.
My thanks in advance, Norma Corona