Species Detail - Common Knapweed (Centaurea nigra) - Species information displayed is based on the dataset "Ireland's BioBlitz".
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).
Centaurea nigra
Common Knapweed
Black Knapweed, Hardhead
N/A
cenig
L.
flowering plant
Species
92
37
26
21/05/2010
20/08/2022
1 January (recorded in 1970)
29 December (recorded in 2018)
Collated by the National Biodiversity Data Centre from different sources, Ireland's BioBlitz, National Biodiversity Data Centre, Ireland, Common Knapweed (Centaurea nigra), accessed 22 February 2025, <https://maps.biodiversityireland.ie/Dataset/189/Species/29714>