Senecio inaequidens

I was on the road to take a picture of the poppy flower in extra, as it is not completely red like all the others, but red and white. A nice variation.

But then I saw these tiny yellow flowers. The plant was about 20cm high, the blossom accordingly small.
I had no idea what they are, but we found them: narrow-leaved ragwort. An invasive species :(
Thanks to Miranda1008 for hosting the wildflowerweek challenge.