View photos of the medicinal plant Agastache pallidiflora (Mountain giant hyssop), profiled in Medicinal Plants of the Western Mountain States.

A passage from Medicinal Plants of the Western Mountain States:

Most western North American species of Agastache are sedative to nervousness and anxiety. Not as muscularly tranquilizing as Valerian or Pedicularis, use Agastache when in need of a calming agent, possibly in response to emotional surges or hysterical outbursts. Here it combines well with Lemon balm or even Pulsatilla.