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Montana Field Guide

Montana Field Guides

Hyssop - Hyssopus officinalis

Non-native Species

Global Rank: GNR
State Rank: SNA
C-value: 1

Agency Status


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General Description
Rhizomatous perennial. Stems erect, 30–60 cm, puberulent, woody at the base. Leaves subsessile, narrowly lanceolate, 1–3 cm long, entire. Inflorescence of congested verticillasters in axils of leaf-like bracts. Flowers: calyx 6–8 mm long, 15-nerved, the lobes ca. half as long as tube; corolla deep blue, ca. 1 cm long, bilabiate, lower lip longer; stamens 4 (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Introduced from Eurasia for medicinal purposes and sporadically escaped in temperate North America. Known from Lake and Flathead counties (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 6

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Relative Density



(Observations spanning multiple months or years are excluded from time charts)



  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Hyssop — Hyssopus officinalis.  Montana Field Guide.  .  Retrieved on , from