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maples with tar spots

countrywoman · 2013-06-22 12:46:59

Have any of you ever had tar spots on maple trees? Just wondering what is the best way to treat them thanks

22-06-2013 12:46pm

#1

countrywoman

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Have any of you ever had tar spots on maple trees? Just wondering what is the best way to treat them thanks

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#2 22-06-2013 3:26pm

periodictable

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Is it on sycamore, Acer pseudoplatnus as sopposed to other Acer?
If on sycamore it is Rhytisma acerinum-not a problem, just not pretty. Reinfection starts again in early summer from fungal spores on the dead leaves on the ground. I noticed it starting on my sycamores about 10 days ago.
There is no cure apart from collecting the dead leaves in autumn and burning them- this way you will reduce the pool of potentially infective agent in the following year.

http://en.wikipedia.org/wiki/Rhytisma_acerinum

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#3 22-06-2013 6:18pm

Oldtree

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and is only an asthetic issue.

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