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Connecticut Plants
Japanese Barberry
Berberis thunbergii DC.

Japanese barberry is an invasive plant, and probably one of the most destructive invasive plants in Connecticut. It can form thick stands that exclude nearly all native plants. The seeds are spread over long distances by birds. Please don't add to the problem by planting Japanese barberry in your yard! More on this plant from Invasive Plant Atlas of New England.

  • Family: barberry (Berberidaceae)
  • Habitat: woods, thickets, pastures
  • Height: 2-6 feet
  • Flower size: 1/4 inch across
  • Flower color: yellow
  • Flowering time: April to May
  • Origin: Japan
Berberis thunbergii DC.
Berberis thunbergii DC.
Berberis thunbergii DC.

Japanese barberry has taken over this woods -- almost nothing grows here besides the trees and the barberry.