Nectarine in a pot?
My grandma gave me a seedling tree several years ago. This year it had a few fruits, and they seem like tasty nectarines. I don't actually know what kind of tree it is, it grew from the seedlings off a hybrid plum/nectarine she was growing, and it does not seem to have too much trouble with leaf curl - it looks and tastes very much like a white, freestone nectarine though.
I have it in what I think is about a 15 gallon pot, and it's about 3 feet tall. I pinched it back about two years ago, so it's quite bushy, probably 3 1/2 feet wide.
I would like to move it into a larger pot so we can take the tree with us if we move in the next 5 - 10 years. Not only are the fruits good, I feel sentimental about the fact that grandma gave me the seedling.
What would be a good size pot, and is there anything special I need to do with the tree to keep it healthy in a pot?