Invasion information |
Range in Japan |
Central to southern Honshu, Kyushu, and Shikoku Is. |
|
Origin |
Unknown. |
Date |
Imported in the end of 19 C (1885-1900). The first record of establishment in Japan was 1961 in Kagoshima Pref. |
Route |
Deliberate: Escape from horticulture. |
Impact |
Competition against native species. Native organism(s) affected: Native herbs in Spring. |
Regulation in Japan |
No action for prevention, mitigation, control, or eradication. |
Introduced range in other countries |
Used for horticulture worldwide. |