| Impact ID | 8841 |
| Impact Type | Commerce |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | The state of Minnesota in the USA has declared Polygonum persicaria (spotted ladysthumb) as a secondary noxious weed, and several states have categorized it as invasive. |
| Reference | 42538 |
| Cost | |
| Location | Minnesota, USA |