Giant Yellow Hyssop (Agastache Neptoides) is a 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.

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).

 

Map Details

Sun Exposure	Savanna, Prairie
Soil Moisture	Mesic, Wet Mesic, Dry Mesic
Bloom Time	Summer, Fall July, August, September, October
Bloom Color	Cream
Max. Height	5 feet
Wetland Code	FACW
Germ Code	C(60) D
Seeds Per Packet	1,000
Seeds Per Ounce	90,000

 

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