Family: Lamiaceae

Scientific Name: Agastache scrophulariaefolia

Common Name: Giant Purple Hyssop, Prairie Hyssop

Description

Purple Giant Hyssop (Agastache scrophulariaefolia) is a tall native plant held erect by sturdy purple-tinged square stems. Highly attractive to bees, butterflies, and birds.  The birds eat the seeds. Flowers are white to pale purple and borne on a raceme. 

Pronunciation(ah-gas-TAH-kee)(skrof-yew-lar-ee-ih-FOE-lee-ah)
Plant TypePerennials Hardy, Wild Flowers
Hardiness Zone5
Sunlightfull, mostly sunny, part sun
Moisturemoist, average
Soil & Siteaverage to moist, mesic to dry conditions disturbed open areas and meadows, banks of streams, and rivers (riparian)
Flowerspale purple to white, borne on a raceme in tight whorls, late-blooming pollinator, high nectar content
Fruitslightly hairy nutlet
Leavessimple, egg-shaped, opposite, serrate to crenate
Stemssquare, diamond-shaped in cross-section, purple to brown tinged, sturdy, scattered short hairs
Dimensions3-6 by 2-4 feet (HS)
Maintenanceeliminate competition from other plants
Propagationseeds, cuttings
Native SiteNorth America
Misc FactsAgastache is two Greek root words, ‘agan’ and ‘stachys,’ which means many ears of grain. Referring to the many flower spikes while in bloom. Species name: Scrophulariifolia translates to “figwort leaf.” Folia is a Latin root word meaning “leaf.” The leaf shape is like the Figworts.
Notes & Reference#153-Illinois Wild Flower (www.illinoiswildflowers.info), #191-Minnesota Wild Flowers (www.minnesotawildflowers.info), #193-Manual of Vascular Plants of the Northeastern United States and Adjacent Canada (Gleason and Cronquist)
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