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Amorpha fruticosa

Basic information
Scientific name Amorpha fruticosa

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Common names Indigobush, False indigo, Bastard indigo
Higher taxon Fabaceae, Fabales, Magnoliopsida, Magnoliophyta
Natural range North America.
Habitat Vacancy, roadside, riverside, beach, etc.
Invasion information
Range in Japan Most of entire Japan Range in Japan
Origin South Korea
Date First introduction was in 1912. After W.W.II massively introduced from S Korea.
Route Deliberate: For sand erosion control, slope protection, shore protection, wind shield, ornament, etc
Impact Competition with native plants. Nutrient (soil nitrogen) enrichment.
Affected organism: Native plants (for example those in subalpine belt of Kirigamine Highland and Mt. Hakusan)
Regulation in Japan No action for prevention, mitigation, control, or eradication.
Introduced range in other countries
Reference Notes
  • Ecol Soc Japan (ed) (2002) Handbook of Alien Species in Japan. Chijin-Shokan. (in Jpn)
  • Hotta et al. (1989) Useful Plants of the World. Heibonsha, Tokyo (in Jpn)
  • JWRC (ed) (2008) A Photographic Guide to the Invasive Alien Species in Japan. Heibonsha. (in Jpn)
  • Ministry of the Environment, Japan. The Invasive Alien Species Act (Accessed on 2011-1-11) (in Jpn)
  • Osada (1976) Colored Illustrations of Naturalized Plants of Japan. Hoikusha, Osaka (in Jpn)
  • etc.
100 of the Japan’s Worst Invasive Alien Species