At up to 1.5m tall and with a flower head 7cm across Woolly thistle is our tallest and most impressive native thistle. Apart from its size it can also be recognized by its reddish purple flower backed by a large globular head of spiny bracts covered in woolly hairs. Flowering occurs throughout July to September.
Woolly thistle is a tall, native perennial of limestone, chalk or lime rich clays. Usually found on dry, neglected habitats such as un-grazed grasslands, open scrub or woodland edges it can occasionally by found on more disturbed ground such as quarry sites.
Can be sown any time of the year.