Species Detail - Japanese Knotweed (Fallopia japonica) - Species information displayed is based on all datasets.

Terrestrial Map - 10km

Distribution of the number of records recorded within each 10km grid square (ITM).
Live Map

Marine Map - 50km

Distribution of the number of records recorded within each 50km grid square (WGS84).
Live Map

Species image

Fallopia japonica
Japanese Knotweed
Fallopia japonica var. compacta, Fallopia japonica var. japonica, Polygonum compactum, Polygonum compactum, Polygonum cuspidatum, Reynoutria japonica, Reynoutria japonica var. compacta, Reynoutria japonica var. compacta
Invasive Species: Invasive Species || Invasive Species: Invasive Species >> High Impact Invasive Species || Invasive Species: Invasive Species >> Regulation S.I. 477 (Ireland)
fajap
(Houtt.) Ronse Decr.
flowering plant
Species
5564
697
130
01/01/1600
03/12/2017
4 January (recorded in 2015)
29 December (recorded in 2015)
National Biodiversity Data Centre, Ireland, Japanese Knotweed (Fallopia japonica), accessed 22 April 2018, <https://maps.biodiversityireland.ie/Species/41674>

Records per month (across all datasets)

Records per year (across all datasets)