Species Detail - Japanese Knotweed (Fallopia japonica) - Species information displayed is based on the dataset "BSBI tetrad data for Ireland".

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
381
190
75
01/01/1600
31/12/2010
2 January (recorded in 2018)
30 December (recorded in 2018)
Botanical Society of the British Isles, BSBI tetrad data for Ireland, National Biodiversity Data Centre, Ireland, Japanese Knotweed (Fallopia japonica), accessed 02 July 2020, <https://maps.biodiversityireland.ie/Dataset/9/Species/41674>

Records per month (across all datasets)

Records per year (across all datasets)