- Centaurea cyanus L. - Cornflower
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(Map updated: March 2008)
This was formerly known as a weed of arable crops, especially grain crops, but has become very rare with improvements in seed-cleaning techniques. This species is related to the knapweed (Centaurea nigra), but is not a true native to Ireland. (Compare corn-cockle, Agrostemma githago).
All names: Centaurea cyanus L.