Agastache urticifolia (Benth.) Kuntze
nettle-leaved giant-hyssop (nettleleaf giant hyssop)
Lamiaceae (Mint family)

Introduction to Vascular Plants


© Virginia Skilton     (Photo ID #23644)


E-Flora BC Static Map

Distribution of Agastache urticifolia
Click here to view the full interactive map and legend

Species Information

Perennial herb from a branching, woody stem-base and a fibrous root; stems numerous, 40-150 cm tall, usually branched, very finely hairy to glabrous, 4-angled.
Opposite, egg- to heart-shaped, 3-10 cm long, 1.5-7 cm wide, margins coarsely toothed, glabrous or slightly roughly short-hairy above, glabrous or very short hairy to roughly short-hairy below; stalks 1-5 cm long.
Inflorescence a terminal spike of unstalked flower clusters, 3-15 cm long; corollas tubular, rose-purple to whitish, 10-14 mm long, 2-lipped, lower broader and longer, upper 2-lobed; calyces usually tinged lavender-purple, 3-veined, teeth 3-5 mm long, narrowly triangular-pointed; stamens 4, exserted, in 2 pairs, one longer.
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.

USDA Species Characteristics

Flower Colour:
Blooming Period:
Late Spring
Fruit/Seed characteristics:
Colour: Green
Present over the Summer
Source:  The USDA


Ecological Framework for Agastache urticifolia

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class




Elevation (metres)
1180 800 1560
Slope Gradient (%)
39 38 40

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

262 260 265
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 3 3
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

All BEC Zones (# of stations/zone) species was recorded in


Habitat and Range

Dry to mesic grasslands, meadows and forest openings in the steppe and montane zones; rare in S BC east of the Coast-Cascade Mountains; S to CA and CO.

SourceThe Illustrated Flora of British Columbia