Last spring SmallBoy planted a seed from his apple. To our surprise it grew and by the autumn it was approximately 20/22". We left the pot outside all winter and got a few funny looks over a twig in a pot but this spring it seems to have about ten times the leaves it did by the end of last autumn. SB is over the moon that his tree hasn't died. I suspect it could do with a larger pot but am wondering if there's a better time of year to repot it so I don't kill it. The leaves are still opening and I've noticed even more new buds/shoots on the twig in a pot tree.