Cirsium vulgare (Savi) Ten.
Plant height 80-150 cm. Flowerhead width 2-4 cm.
A very imposing prickly thistle with reddish-purple flowers. The leaves are deep green and shaped like a spearhead.
It flowers July to October, and is found on brownfield sites, roadside verges, embankments and in dry, grassy places. Abundant and widespread throughout Britain.