Q. I have read about training trees to fit in small spaces or against a wall. What can you tell me about this? I have a brick wall in an alcove and also a small space near an entry sidewalk. A. For a ...

Trees come in all shapes and sizes. The fashion for planting them has waxed and waned over the centuries, but has fitfully gathered pace since the 1970s, when a growing sense of Britain’s relative ...