Labiatae Family - "Giant Yellow Hyssop" 

From the Greek agan (very much) and stachys (a spike) referring to the many flower spikes; nepetoides refers to it's resemblance to nepeta (catnip).

Perennial, 3 to 5 feet with square stems; white to yellow flowers in dense spikes; blooms from July to September in woodland edges and rocky, wooded hillsides from Quebec to Virginia, northern Texas to Oklahoma and north into South Dakota and Minnesota. Not a true hyssop.Tolerates mesic soils well and grows with partial to full sunlight.

Native Americans used the leaves as part of a compound mixture to relieve poison ivy rash.