Wooden Surface

Agastache scrophulariifolia

Commonly referred to as Purple Giant Hyssop, the flowers of this plant are very pale purple, nearly white, not darker purple as seen on it’s cousin Anise Hyssop.


The tall, stately spiers feature an extended bloom time from late June into October and is an incredibly important plant for our buzzy pollinator friends, especially the at-risk Bombus fervidus as well as providing valuable pollen and nectar for other native bees, butterflies, and moths.


Although the Purple Giant Hyssop is a member of the mint family, it forms clumps, and does not take over areas of the garden like a true mint. This plant needs its own space as it is easily out-competed by other plants, and does require some soil disturbance in order to germinate seeds and spread.


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Agastache scrophulariifolia (Purple giant hyssop)

  • details

    SIZE: 1/2 quart pot
    type: herbaceous perennial
    sun needs: full sun, part sun/part shade
    water needs: Moist to average soil
    height: 5'
    plant spacing: 1/sq ft
    bloom time: July, August, September, October
    bloom color: white, pink
  • good plant companions

    Sensitive to competition

  • special notes

    Endangered in Massachusetts
    moderate salt tolerance. Some salt exposure should not be fatal to the plant but some leaf burning may still occur.
    deer resistant (please note that does not mean deer proof)