Species Detail - Giant Knotweed (Fallopia sachalinensis) - Species information displayed is based on all datasets.
Terrestrial Map - 10km
Terrestrial Map - 10km
Distribution of the number of records recorded within each 10km grid square (ITM).Marine Map - 50km
Marine Map - 50km
Distribution of the number of records recorded within each 50km grid square (WGS84).Species image
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Fallopia sachalinensis
Giant Knotweed
NHMSYS0000458719
UnverifiedUnverified
Polygonum sachalinense F. Schmidt, Polygonum vivax nom. inval. J. Schmitz & Strank, Reynoutria sachalinensis (F. Schmidt) Nakai, Reynoutria vivax J. Schmitz & Strank, Reynoutria vivax J.Schmitz & Strank
Invasive Species: Invasive Species || Invasive Species: Invasive Species >> High Impact Invasive Species || Invasive Species: Invasive Species >> Regulation S.I. 477 (Ireland)
fasac
(F. Schmidt) Ronse Decr.
flowering plant
Species
121
58
44
01/01/1957
23/04/2023
1 April (recorded in 2009)
1 December (recorded in 2017)
National Biodiversity Data Centre, Ireland, Giant Knotweed (Fallopia sachalinensis), accessed 28 April 2025, <https://maps.biodiversityireland.ie/Species/41677>