Birch tree leaves all drying off and falling.

Asked August 19, 2017, 10:50 AM EDT

I have a large birch tree that is now dropping most of its leaves, they are turning light brown. We had hail damage in June but that is the only tree in my yard that is doing that. I have green ash, locust, maple, basswood and crabapple trees. I don't see any Asian beetles, what is causing this and what should I do about it. Thanks

Hennepin County Minnesota tree losing leaves birch tree possible insect damage horticulture

1 Response

The lacy, skeletonized leaves in the pictures are classic japanese beetle damage and birch are one of the beetles favorite species. I think if you look next year you will see the birch is covered in beetles. The beetles prefer the topmost, sun exposed leaves so check out the top of the tree with binoculars. The Japanese beetles are almost done for the year so they may not be feeding on your tree now.
http://blog-yard-garden-news.extension.umn.edu/2017/07/dealing-with-japanese-beetles.html
Your tree may also have other problems so please check out the information about why a birch might drop leaves in summer.
http://homeguides.sfgate.com/birch-leaf-turning-yellow-summer-65959.html