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I planted six seedlings of these trees approximately twenty years ago. At the time I kept two hives of bees. These trees blossom between mid July and mid August, when there are few other nectar producing blossoms. My wife and I recently noticed that during the blossom time there are dead Japanese Beetles amid the blossom droppings, some of which fall on our driveway. I have watched this during the last two years. It's a good thing I am retired, because it is something akin to watching the grass grow. A beetle will land on a blossom and crawl around, apparently ingesting something. After a period of time, maybe fifteen or twenty minutes, the beetle will drop off and either spiral down or descend at an angle to the ground. The ones that land on the driveway will start to crawl toward the grass, and very shortly turn over on their backs and paw the air for a while, then die. In a short time small ants eat out the inside, leaving the brittle shell which doesn't last long. Two years ago I spoke with a person at our county agricultural office and told them I would contact them so they could witness this. Unfortunately we have had no Japanese beetles for the last two years, so there has been nothing for them to see. I will contact them again during the next beetle cycle.
Sincerely, John Silcox
306 Deer Trail Road
Spring Grove, PA 17362