Class 1B · Early Detection Rapid Response
Japanese Knotweed
Polygonum cuspidatumnow Reynoutria japonica
Known in Utah but in very limited populations. Also a very high priority, because eradication is still realistic.
- Aug - Oct
- Treatment window
- Class 1B
- Utah designation
What we know
Class 1B: early detection rapid response
Known in Utah but in very limited populations. Also a very high priority, because eradication is still realistic.
Treatment on japanese knotweed works best aug - oct. A full profile for this species is still being written. Until it is here, the USU Extension field guide carries identification detail, and we would rather hear from you than have you guess.
At a glance
- Common name
- Japanese Knotweed
- Scientific name
- Polygonum cuspidatum (now Reynoutria japonica)
- Utah class
- 1B - Early Detection Rapid Response
- Treatment window
- Aug - Oct
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