Q. (My) birch tree, planted many years ago, has never really grown full. In the spring, it will get tiny green leaves but (it’s) still very airy and not full foliage. We’ve been told not to prune it.

Q: I have a weeping birch that is at least 25 years old. It's gorgeous and was doing well until we had a lot of wet weather two years ago. The soil must have become so wet that the tree tipped over ...