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Not all maples have leaves with black ‘tar spots.’ Here’s the most likely culprit
The likeliest culprit for dropping leaves with tar spots on them is the Norway maple, a species loathed and despised by at least one arborist. Like leaves falling in autumn, I’ve gotten a flurry of email about my column this week on maple leaves dotted with tar spots, a byproduct of a fungus known as Rhytisma acerinum. That’s why I wrote the column, to let people know that tar spots are not a sign of a serious affliction. Jennings said sugar maples, a native species, “seem to be resistant, or at least not show the typical end of season black spots. “It is just not a significant enough of a loss to, by itself, cause the tree to appear to suffer (to us).”Loading... Loading... Loading... Loading... Loading... Loading...What’s broken in your neighbourhood?
Source: thestar November 20, 2020 10:00 UTC
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