10-12 feet tall and 13-15 feet wide, perfect for our yards. You would pick it in or around Thanksgiving.
Now be careful planting a citrus even if you are told by an agriculturist that it is cold tolerant. It does need to be fully established before you can expect good cold tolerance and cold tolerance doesn't mean freeze proof. Sometimes we just get way colder than normal, like last winter. Maybe that wont happen again for a long time!