Knapweed is the common name for the genus centaurea.
There are thought to be more than 500 species of this robust, thistle-like plant.
Many gardeners consider Knapweeds to be weeds because they self-seed everywhere.
In our garden we have a good crop of centaurea, as you will note from this photograph. Behind these “weeds” is a banner that I used when I campaigned for a Sunshine Act for Scotland.
I am a gardener who reckons that ‘weed’ is just a name for growth that thrives.
So, let the sun shine and centaureas flourish!