Here in northern Virginia, a common flowering tree is the pear tree (not fruit bearing). we have 10, and all but one is full of leaves and very healthy. One however, has a very thin leaf coverage, and looks like it's in distress. I planted the tree about 6 years ago, it has blossomed each year (including this year) and has always been full leaved. This year, it looks about half as full as its sister trees. The tree is exposed to full western sun. It's gotten very tall - but has not branched out the way the other pears have. Any clues? Thanks
