The downing... Last year the honey locust in our back yard was looking pretty bad, sick with something. We were quite sad about that, as that tree was a favorite. This spring it was clearly dead – we waited and hoped that some leaves would pop out, but there wasn't a one. Less than 50' away is an identical honey locust, planted at the same time (around 15 years ago), and it is doing just fine. We really don't know what killed the one in the back yard, though we suspect girdling by lawnmower.