Invasion information | ||
Range in Japan | Almost entire Japan including Okinawa. | |
Origin | Unknown. | |
Date | 1880s | |
Route | Deliberate: As ornament. | |
Impact | Competition with native species. Native organism(s) affected: Native grass species. | |
Regulation in Japan | Import, transport and keeping are prohibited in Japan by the Invasive Alien Species Act. | |
Introduced range in other countries | Taiwan, Australia, New Zealand, Saudi Arabia, South Africa, etc. |
Reference | Notes |
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100 of the Japan’s Worst Invasive Alien Species
Several local governments in Japan is alerting to stop cultivation and transplanting. |