Norway Maple (Acer platanoides)

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Norway Maple
Tree. Introduced in 1756; extensively planted as an ornamental.

  • Bark is grayish and smooth with a network of low ridges.
  • Leaf stems exude a white sap when broken off twig.
  • Flowers, which appear very early in spring (April) are yellow-green in color.
  • Paired, papery fruit are divergent, nearly 180º apart.
  • Retains leaves into late fall which often have round, black, fungal spots this time of year.
The Problem:
Escapes from planted landscapes into natural areas where it out-competes native vegetation, reducing forest diversity.