Agastache foeniculum (Pursh) Kuntze
giant-hyssop (blue giant hyssop)
Lamiaceae (Mint family)

Introduction to Vascular Plants


© Neil L. Jennings     (Photo ID #8869)


E-Flora BC Static Map

Distribution of Agastache foeniculum
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Species Information

Perennial herb from a creeping rhizome; stems erect, 50-100 cm tall, little branched, glabrous, except hairy in inflorescence, 4-angled.
Opposite, egg-shaped, tips pointed, margins coarsely toothed, lower surfaces whitish with minute appressed hairs.
Inflorescence an interrupted terminal spike; corollas tubular, blue, longer than calyx; calyces violet or bluish, 6-12 mm long, 15-veined, hairy, teeth 1-2 mm long; stamens 4, exserted, the upper pair curved downward and crossing lower 2.
Nutlets, 4 clustered together, oblong, about 2 mm long, brown, small hairs at tip.

SourceThe Illustrated Flora of British Columbia


If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Habitat and Range

Dry to mesic open forests and clearings in the montane zone; rare in C and E BC; N to NT, E to ON and S to DE and CO.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Agastache anethiodora (Nutt.) Britton