Natural Enemies
The Norway maple is threatened in a few areas by the Asian long-horned beetle, which eats through the trunks, often killing the trees.
A number of species of Lepidoptera feed on Norway maple foliage. Norway maple is generally free of serious diseases, though can be attacked by the powdery mildew Uncinula bicornis, and verticillium wilt disease caused by Verticillium spp. "Tar spots" caused by Rhytisma acerinum infection are common but largely harmless.
Read more about this topic: Acer Platanoides
Famous quotes containing the words natural and/or enemies:
“We are educated in the grossest ignorance, and no art omitted to stifle our natural reason; if some few get above their nurses’ instructions, our knowledge must rest concealed and be as useless to the world as gold in the mine.”
—Mary Wortley, Lady Montagu (1689–1762)
“Nothing could his enemies do but it rebounded to his infinite advantage,—that is, to the advantage of his cause.... No theatrical manager could have arranged things so wisely to give effect to his behavior and words. And who, think you, was the manager? Who placed the slave-woman and her child, whom he stooped to kiss for a symbol, between his prison and the gallows?”
—Henry David Thoreau (1817–1862)