Species Detail - Common Knapweed (Centaurea nigra) - Species information displayed is based on the dataset "Species Data from the National Vegetation Database".

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
Centaurea nigra
Common Knapweed
NBNSYS0000004506 UnverifiedUnverified
N/A
cenig
L.
flowering plant
Species
1963
438
107
30/08/1961
03/10/2011
1 January (recorded in 1970)
29 December (recorded in 2018)
Collated by the National Biodiversity Data Centre from different sources, Species Data from the National Vegetation Database, National Biodiversity Data Centre, Ireland, Common Knapweed (Centaurea nigra), accessed 26 April 2025, <https://maps.biodiversityireland.ie/Dataset/186/Species/29714>

Records per month (across all datasets)

Records per year (across all datasets)