Agastache wrightii
Agastache wrightii is a plant species in the genus Agastache, family Lamiaceae. It is native to the US states of Arizona and New Mexico, as well as the Sierra [Madre Occidental] along the boundary between the Mexican states of Chihuahua and Sonora. Its common name is Sonoran giant hyssop.
It is a herb up to 2m tall with blue flowers.