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Agastache scrophulariifolia (Purple giant hyssop)
Wasowski, Sally and Andy

Agastache scrophulariifolia

Agastache scrophulariifolia (Willd.) Kuntze

Purple Giant Hyssop, Purple Giant-hyssop

Lamiaceae (Mint Family)

Synonym(s): Agastache scrophulariifolia var. mollis


USDA Native Status: L48 (N), CAN (N)

Flowers purplish-red in a crowded, terminal spike with purple bracts. Oval, opposite leaves are toothed and whitish beneath. Erect, purplish stems are 2-5 ft. tall.


From the Image Gallery

5 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Size Notes: Up to about 5 feet tall.
Fruit: 4 nutlets.

Bloom Information

Bloom Color: White , Pink , Purple
Bloom Time: Jul , Aug , Sep
Bloom Notes: Purple to lavender to pale pink to white.


USA: CT , DC , DE , GA , IA , IL , IN , KS , KY , MA , MD , MI , MN , MO , NC , NE , NH , NJ , NY , OH , PA , SC , SD , TN , VA , VT , WI , WV
Canada: MB , NB , ON , QC , SK
Native Distribution: VT & MA to GA, w. to w. Ont., e. SD & e. KS
Native Habitat: Rich woods & thickets

Growing Conditions

Light Requirement: Sun , Shade
Soil Moisture: Moist
Soil Description: Rich, moist soils


Conspicuous Flowers: yes
Fragrant Foliage: yes
Attracts: Butterflies

Value to Beneficial Insects

Special Value to Native Bees
Special Value to Bumble Bees
Special Value to Honey Bees

This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.


Commercially Avail: yes

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Natural Biodiversity - Johnstown, PA

Web Reference

Webref 26 - Minnesota Wildflowers: a field guide to the flora of Minnesota (2009)
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Agastache scrophulariifolia in USDA Plants
FNA: Find Agastache scrophulariifolia in the Flora of North America (if available)
Google: Search Google for Agastache scrophulariifolia


Record Modified: 2022-11-04
Research By: TWC Staff

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