Agastache nepetoides

Agastache nepetoides, the yellow giant hyssop, is a perennial flower native to the United States and Canada. It is a member of the family Lamiaceae.
Conservation status in the United States.
It is listed as endangered in Connecticut, and as threatened in New York (state), Vermont, and Wisconsin.
Native American ethnobotany.
The Iroquois use a compound infusion of plants as a wash for poison ivy and itch.