How and when can I prune my crabapple?
W live south of Calgary on an acreage. We planted a crab-apple about 18 years ago on the west side of our house. It has done really well and was 30 feet tall, so my husband cut it back. It still thrives, but it looks ugly. What is the best time to do a major prune on an apple, and how can we prune it so that it looks more natural?