Centaurea nigra
Centaurea nigra
Shoot User
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Common knapweed is thistle-like in appearance but without spines. Its dark flowerheads with pink-purple flowers are very attractive to insects including hoverflies, bumble bees and a range of day-flying moths. Butterflies also love it and very few plants will attract more than this one.
Posted: Sunday 17th of May 2009 02:04 PM Last reply: Monday 1st of January 2024 08:03 PM