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Norway maple, red maple and sugar maple are the species most commonly affected. The trouble often starts after insect-induced defoliation, which weakens the trees and makes them more susceptible to secondary pathogens. Early signs of decline include small or scorched foliage, and premature fall colors on some of a tree's branches.
Acer rubrum, the red maple, also known as swamp maple, water maple, or soft maple, is one of the most common and widespread deciduous trees of eastern and central North America. The U.S. Forest Service recognizes it as the most abundant native tree in eastern North America. [ 4 ]
Synanthedon acerrubri bore into several species of maple tree, [4] especially red maples and sugar maples. They can cause significant damage to maple trees. They can cause significant damage to maple trees.
The maples belong to the genus Acer, an important group of mainly deciduous trees and shrubs in the family Sapindaceae, which are widely cultivated throughout the temperate northern hemisphere. Some, such as Acer griseum , have ornamental bark; but most are valued in cultivation for their brilliant autumn foliage in shades of yellow, orange and ...
Acer platanoides is a deciduous tree, growing to 20–30 m (65–100 ft) tall with a trunk up to 1.5 m (5 ft) in diameter, and a broad, rounded crown. The bark is grey-brown and shallowly grooved. Unlike many other maples, mature trees do not tend to develop a shaggy bark. The shoots are green at first, soon becoming pale brown.
To get rid of the sooty mold we must remove or prevent the honeydew. To avoid the honeydew, the best thing is to prevent the insects in the first place.
Shantung maple is grown as an ornamental plant in Europe and North America. [4] [5] A number of cultivars have been selected, including 'Akikaze Nishiki' with variegated leaves, 'Fire Dragon' with very bright autumn colour. [4] The cultivar 'Keithsform' (Norwegian Sunset) is a hybrid between Acer truncatum and Acer platanoides (Norway Maple). [8]
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related to: red sunset maple tree problems examples plants