← Back to Plant Finder

Giant Hyssop
Agastache scrophulariaefolia

a.k.a. Purple Giant Hyssop

Purple Giant Hyssop has a long bloom time and a favorite nectar source for the Rusty-Patched Bumblebee. It can grow up to 6 feet but can be cut back to reduce height.

USDA symbol: AGSC

General Information

Plant TypeForb
Height4 feet
Light ExposureSun
Soil MoistureMedium
Bloom ColorWhite, Pink, Green
Giant Hyssop (Giant Hyssop<div><em class="small">Agastache scrophulariaefolia</em></div>)
Photo credit: Minnesota Wildflowers (Click to enlarge)


Flooding / Inundation ToleranceModerate
General Resilience7
Salt ToleranceLow
Stress ToleranceGeneral Disturbance

Pollinator Value: High

Bloom MonthsJuly to August
Pollinator BenefitInsect Pollinated, Provides Nectar, Stem Nesting

Project Planning

Project TypeBoulevard, Rain Garden, Shoreline Buffer
Coefficient of Conservatism5
Herbivore SensitivityLow
Rate of SpreadMedium
Soil StabilizationShallow
Vegetative ReproductionClonal


CountyBig Stone, Blue Earth, Brown, Carver, Chisago, Cottonwood, Dakota, Dodge, Fillmore, Goodhue, Hennepin, Houston, Isanti, Jackson, Kandiyohi, Lincoln, Martin, Mille Lacs, Mower, Murray, Nicollet, Nobles, Olmsted, Pine, Pope, Rice, Sibley, Steele, Wabasha, Washington, Winona, Wright, Yellow Medicine
EcoregionDriftless Area, Lake Agassiz Plain, North Central Hardwood Forests, Northern Glaciated Plains, Northern Lakes and Forests, Western Cornbelt Plains
Approximate Eco ProvinceEastern Broadleaf Forest, Laurentian Mixed Forest, Prairie Parkland, Tallgrass Aspen Parklands