Ask a Question forum: Mature Sugar Maple early dieback, possible disease?

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Mattjc452
Feb 8, 2017 2:28 AM CST
Hello everyone!

I have a 35 year old sugar maple in the front garden, and curiously showed disparate autumn colours on two main branches following a wet summer. This year, the same two regions of the the tree (upper right, and lower left in the photograph) hold leaves displaying a lighter shade of green, and the leaves themselves up close show browining around the inner centres of the leaves, with the outer edges looking more or less fine (included in another photo). I'd say it was drought, but the same occurred last year with good rainfall (during 5 consecutive years of good rain, approximately 750-850mm). What could cause leaf browning from the center outwards, and an early autumn for only some branches? I'm hopeing it's simply a water or nutrient problem, but fear the worst. Any help would be immensely appreciated!

Thanks in advance

Ps. Regional information - soil pH=4.2-4.8, rainfall 750-850mm, max & min temperatures 39C and -9C respectively.
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Name: Sally
central Maryland
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sallyg
Feb 8, 2017 6:17 AM CST
I think the two branches have something wrong in the circulatory system, maybe Verticillium wilt. I'm not a pro, but I have had this on a couple of maples, and it seemed to fit description.. Those two branches may die, but the rest of the tree may go on for some time.

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[Last edited by sallyg - Feb 8, 2017 6:21 AM (+)]
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