Dawn Redwood Leaves Have Brown Splotches And Are Sparse On Top Branches

Question From: J. Dwyer - Columbia, Missouri, United States
Q: I have a dawn redwood that is about 12 years old and 30-35 feet tall. I just noticed the leaves at the top of the tree look sparse. The limbs are not filling out with leaves. I took a picture showing browning on the underside of the leaves. When the picture is expanded you can see small brown splotches on the underside of the leaf. Can you tell me what is going on. The vegetation on the bottom half of the tree bole is filled out and looking good.
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A: If this were my tree I would get an onsite inspection from a professional for an accurate Id. and method of control to possibly save the tree. To find a certified arborist in your area go to www.tcia.org and enter your zip code. Please let us know what you find out. Good Luck and Happy Yardening, Nancy