This had appeared at the bottom of my garden. It is to say the least quite strange in appearance
No picture, you will know a picture has uploaded when a progress bar moves across the bottom of this box.
When the buds first come they look like they covered in a cob-web
Looks like Centaurea macrocephala, giant knapweed.
I have google the names and looked at many photos and I do believe beyond doubt you are right.
I also now know I should move it to a less sunny position as it get s no shade and does distract a little too much from other plants. Thank you very much