Berkheya Species, Purple Berkheya, African Thistle 'Zulu Warrior'

It grows in Zone 5b/6a. Jelgava, Latvia, Europe. Stable. Stays evergreen.

Attractive and reliably hardy perennial in Seattle in Zone 8b. Forms a prickly, woolly rosette of basal leaves, followed in mid-summer wi...Read Moreth a spiky stalk 18-30" tall full of lovely, pale purple sunflower-like blooms. Blooms are long lasting and appear until frost. Blooms well with no supplemental watering in summer in Seattle, and survives soggy winters in average garden soil.

Started from seed back in February/March of this year is strating to form a bloom now as of early August. Very interesting plant with lar...Read Morege prickles on the wooly leaves.
Make sure to tell any other gardeners in the house what it is so they don't think it's a weed and pull it out!

Also, mine is growing well in a container in full sun.

Many sources list this as Zone 6 hardy.