We are looking for help. We have a 11 yr. old maple tree that is dropping leaves that are cut about 1/2 inch from the leaf base (most of the stem remains on the tree). Otherwise, the leaves look healthy. Any idea what might be causing this or treatment? Your assistance is appreciated.
Ray

Reply to post by Ray Mack, on May 05, 2001 at 11:31:59:

I would keep an eye out for squirrels or some kind of chewing insect. Squirrels often cut small branches to eat the young maple seeds. At what distance are you observing this? Just the leaves on the ground; from in the tree; binoculars?

Reply to post by Mark Goodwin, on May 05, 2001 at 11:31:59:

I believe I have an answer from Dr. Appleby Univ of Illinois. He said there is an insect called a cutfly that operates as described. It only has one generation per year and seldom harms the tree. Thx for all the responses.

Reply to post by Ray Mack, on May 06, 2001 at 13:26:17:

There are also some foliar diseases that can cause leaf drop before noticable discoloration occurs. Maple anthracnose is one. This would be somewhat dependent on weather conditions in the past few weeks- generally cool nights, warm but not hot days, plenty of moisture like dew or rain.