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).
|Sun Exposure||Savanna, Prairie|
|Soil Moisture||Mesic, Wet Mesic, Dry Mesic|
|Bloom Time||Summer, Fall
July, August, September, October
|Max. Height||5 feet|
|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.
Posted by PH on 29th Aug 2015
Planted this spring from plugs around a new deck. These grew well in the partial shade and clay soil. They have a nice shape and size.
Posted by Tuire Cechin on 30th Jul 2014
Seeds germinated easily and grew strong. I had more seedling than I could handle. Recommend strongly.