Field Guide to Invasive Alien Plants

Peter Alden - March 1, 2004

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Problem Trees


  • Black Locust
  • Norway Maple
  • Tree-of-Heaven
  • Autumn-olive

Problem Small Trees and Shrubs


  • Common Buckthorn
  • Glossy Buckthorn
  • European Hedge-Privet
  • Japanese Knotweed