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  • AGASTACHE NEPETOIDES | Giant Yellow Hyssop
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Product Description

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
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.

Product Videos

Giant Yellow Hyssop - Agastache nepetoides in bloom at Ion Exchange (02:04)
Earthyman views Giant Yellow Hyssop (Agastache nepetoides) in full bloom at Ion Exchange native seed and plant nursery in NE Iowa http://www.ionxchange.com
  • Giant Yellow H...
    Earthyman views Giant Yellow Hyssop (Agastache nepetoides) in ...
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Product Reviews

  1. beautiful 5 Star Review

    Posted by 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.

  2. Easy to grow from seeds 5 Star Review

    Posted by on 30th Jul 2014

    Seeds germinated easily and grew strong. I had more seedling than I could handle. Recommend strongly.