Invasion information | ||
Range in Japan | Almost entire Japan | |
Origin | Unknown. | |
Date | Late 19C to early 20C | |
Route | Deliberate: as ornamental plant | |
Impact | Competition with native and crop plants. Hybridization with native Iris Native organism(s) affected: Native aquatic and crop plants (competition). Native Iris. Several native Iris taxa are listed in the Japanese national Red List. | |
Regulation in Japan | Keeping of this species in Saga Pref. are controled by a prefectural ordinance. | |
Introduced range in other countries | Africa, New Zealand, North and Latin America, |
Reference | Notes |
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100 of the Japan’s Worst Invasive Alien Species. This species often used for making biotope. |