Species Detail - Giant Knotweed (Fallopia sachalinensis) - Species information displayed is based on the dataset "Irish vascular plant data 1999-2009".

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 sachalinensis
Giant Knotweed
Polygonum sachalinense, Polygonum vivax nom. inval., Reynoutria sachalinensis, Reynoutria vivax, Reynoutria vivax
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
6
5
4
26/06/2004
13/05/2006
1 April (recorded in 2009)
1 December (recorded in 2017)
Dr David Thomas Holyoak, Irish vascular plant data 1999-2009, National Biodiversity Data Centre, Ireland, Giant Knotweed (Fallopia sachalinensis), accessed 04 July 2020, <https://maps.biodiversityireland.ie/Dataset/35/Species/41677>

Records per month (across all datasets)

Records per year (across all datasets)