E-Flora BC: Electronic Atlas of the Flora of British Columbia

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

Introduction to Vascular Plants

© Virginia Skilton  Email the photographer   (Photo ID #23644)

E-Flora BC Static Map
Distribution of Agastache urticifolia
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Species Information

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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.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

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

Habitat / 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.

Source: The Illustrated Flora of British Columbia


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) 800 1180 1560
Slope Gradient (%) 38 39 40
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
260 262 265
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 3 3
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: IDF(2)


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References