echinops ritro (globe thistle) 'Vietch's Blue'

I have this plant growing under the eaves on the sunny side of the house, which is the "ultra drought-tolerant, super low maintenance zone".  Globe thistle fits the bill.

It's a bit floppy, so I should probably get around to staking it, but it's not the end of the world.  I generally cut the flowers to bring inside anyway. 

This variety gets about 1 m tall and 75 cm wide and is hardy to zone 2.