Pollinator plant

narrowleaf mountainmint

Pycnanthemum tenuifolium

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Common names

14 names · 4 languages
EnglishYour language
  • common horsemint[1][2]
  • Mountain Mint[3]
  • Narrow-leaf Mountain Mint[3]
+8 more namesShow fewer names
  • Narrow-leaf Mountain-mint
  • Narrow-leafed Mountain Mint[3]
  • Narrow-leaved Mountain Mint[1][2]
  • Narrow-leaved Mountainmint[1][2]
  • Narrowleaf Mountain Mint[1][2]
  • narrowleaf mountainmint[1][4][2]
  • Slender Mountain Mint[3]
  • Slender Mountainmint[1][2]
Other languages (3)
Dutch
  • Bergmunt
French
  • Pycnanthème à feuilles étroites[1][2]
Czech
  • mátovec tenkolistý[2]
Sources & name notes (4)

Names recorded in our plant catalogue and botanical sources, grouped by language. Usage can vary by region.

Catalogue language labels are reviewed separately from botanical source records.

Numbered references identify names recorded by an external source. Other names are from our plant catalogue.

[1] Pycnanthemum tenuifolium — iNaturalist taxon names ↗

Community-curated iNaturalist taxonomy. This is a common-name attestation, not an independent botanical determination.

Source records
  • common horsemint — results[0].names[3]; taxon id 126891; Pycnanthemum tenuifolium.
  • Narrow-leaved Mountain Mint — results[0].names[7]; taxon id 126891; Pycnanthemum tenuifolium.
  • Narrow-leaved Mountainmint — results[0].names[6]; taxon id 126891; Pycnanthemum tenuifolium.
  • Narrowleaf Mountain Mint — results[0].names[8]; taxon id 126891; Pycnanthemum tenuifolium.
  • narrowleaf mountainmint — results[0].names[2]; taxon id 126891; Pycnanthemum tenuifolium.
  • Slender Mountainmint — results[0].names[5]; taxon id 126891; Pycnanthemum tenuifolium.
  • Pycnanthème à feuilles étroites — results[0].names[4]; taxon id 126891; Pycnanthemum tenuifolium.
[2] Pycnanthemum tenuifolium — iNaturalist taxon names ↗

Community-curated iNaturalist taxonomy; common-name attestation, not an independent botanical determination.

Source records
  • common horsemint — results[10].names[3]; taxon id 126891; Pycnanthemum tenuifolium.
  • Narrow-leaved Mountain Mint — results[10].names[7]; taxon id 126891; Pycnanthemum tenuifolium.
  • Narrow-leaved Mountainmint — results[10].names[6]; taxon id 126891; Pycnanthemum tenuifolium.
  • Narrowleaf Mountain Mint — results[10].names[8]; taxon id 126891; Pycnanthemum tenuifolium.
  • narrowleaf mountainmint — results[10].names[2]; taxon id 126891; Pycnanthemum tenuifolium.
  • Slender Mountainmint — results[10].names[5]; taxon id 126891; Pycnanthemum tenuifolium.
  • Pycnanthème à feuilles étroites — results[10].names[4]; taxon id 126891; Pycnanthemum tenuifolium.
  • mátovec tenkolistý — results[10].names[9]; taxon id 126891; Pycnanthemum tenuifolium.
[3] Pycnanthemum tenuifolium — Plant Toolbox common names ↗

NC State Extension Gardener Plant Toolbox; English common names in a United States horticultural reference.

Source records
  • Mountain Mint — ul#common_names > li:nth-of-type(1); heading: Common Name(s):; Pycnanthemum tenuifolium.
  • Narrow-leaf Mountain Mint — ul#common_names > li:nth-of-type(3); heading: Common Name(s):; Pycnanthemum tenuifolium.
  • Narrow-leafed Mountain Mint — ul#common_names > li:nth-of-type(2); heading: Common Name(s):; Pycnanthemum tenuifolium.
  • Slender Mountain Mint — ul#common_names > li:nth-of-type(4); heading: Common Name(s):; Pycnanthemum tenuifolium.
[4] Catalogue of Life 2026-08-20 — Pycnanthemum tenuifolium ↗

Common names from World Plants, version 26.05, reproduced in Catalogue of Life 2026-08-20. License: CC BY.

Source records
  • Narrowleaf mountainmint — VernacularName.tsv, line 159613; taxon 4QLWC.
Plant references

Source-backed information

Published observations for this plant. Each reference supports the information beside it.

Taxonomy
Pycnanthemum tenuifolium is an accepted species in Catalogue of Life.

Taxonomic treatment in the August 2026 release; the catalogue record name is preserved.

Sources [1]
Botanical family
Lamiaceae

Family in the cited taxonomic treatment.

Sources [1]
Mature height
0.61–1.22 m

NC State Extension profile. Converted from the source range in feet and inches; mature size varies with growing conditions.

Sources [2]
Mature spread
0.61–0.91 m

NC State Extension profile. Converted from the source range in feet and inches; mature size varies with growing conditions.

Sources [2]
Plant habit
Clumping; Erect

NC State Extension profile.

Sources [2]
Life cycle
Perennial

NC State Extension profile.

Sources [2]
Growth rate
Rapid

NC State Extension profile.

Sources [2]
Light
Full sun (6 or more hours of direct sunlight a day); Partial Shade (Direct sunlight only part of the day, 2-6 hours)

NC State Extension profile.

Sources [2]
Moisture and drainage
Good Drainage; Moist; Occasionally Dry; Occasionally Wet

NC State Extension profile.

Sources [2]
Soil texture
Clay; High Organic Matter; Loam (Silt); Sand; Shallow Rocky

NC State Extension profile.

Sources [2]
Soil pH
Acid (<6.0)

NC State Extension profile. These source categories do not certify the catalogue’s numeric pH interval.

Sources [2]
Flowering season
Autumn; Summer

NC State Extension profile. Seasons reflect the source region and do not verify the catalogue’s exact flowering months.

Sources [2]
Reported wildlife attraction
Listed as attracting: bees, butterflies, pollinators.

NC State Extension profile. Broad wildlife categories; this does not establish flower visits by a named bee species or quantify nectar and pollen.

Sources [2]
Native range
E. Canada to C. & E. U.S.A.

Explicit native locality records in Kew WCVP v16; introduced and doubtful distributions excluded. Continent conversion follows the documented geographic mapping.

Sources [3]
Catalogue ratings

Who this plant supports

Honey bees

Low suitability
Nectar value Low
Pollen value Unknown
Plant profile

About this plant

Narrow-leaf Mountain-mint (Pycnanthemum tenuifolium) is a herbaceous plant. It flowers from July to September.

Sources and references

References for the information marked with source numbers on this page.

Sources checked
  1. Catalogue of Life Pycnanthemum tenuifolium — Catalogue of Life COL26.8

    COL26.8 (2026-08-20). Contributing checklist: Synonymic Checklists of the Vascular Plants of the World. This is taxonomic evidence, not an independent ecological study.

    Supports: TaxonomyBotanical family
    Relevant sections
    • Taxonomy: NameUsage.tsv line 1094630; ID 4QLWC; rank species; status accepted
    • Botanical family: NameUsage.tsv line 1094630; ID 4QLWC; rank species; status accepted

    Source checked on .

    Source data licence: CC BY 4.0.

  2. NC State Extension Pycnanthemum tenuifolium — Plant Toolbox

    NC State Extension Gardener Plant Toolbox. Growing conditions and seasons reflect its United States horticultural context.

    Supports: Mature heightMature spreadPlant habitLife cycleGrowth rateLightMoisture and drainageSoil textureSoil pHFlowering seasonReported wildlife attraction
    Relevant sections
    • Mature height: Dimensions / Height
    • Mature spread: Dimensions / Width
    • Plant habit: Habit/Form
    • Life cycle: Life Cycle
    • Growth rate: Growth Rate
    • Light: Light
    • Moisture and drainage: Soil Drainage
    • Soil texture: Soil Texture
    • Soil pH: Soil pH
    • Flowering season: Flower Bloom Time
    • Reported wildlife attraction: Attracts

    Source checked on .

  3. Royal Botanic Gardens, Kew Pycnanthemum tenuifolium — Kew WCVP native distribution

    Native distribution and taxonomic treatment from the official WCVP v16 export (4 June 2026). The link opens the corresponding POWO taxon. Source rows are retained in the native-range audit archive.

    Supports: Native range
    Relevant sections
    • Native range: WCVP v16; wcvp_names.csv lines 1087451; wcvp_distribution.csv native locality lines 225509, 225510, 225511, 225512, 225513, 225514, 225515, 225516, 225517, 225518, 225519, 225520, 225521, 225522, 225523, 225524, 225525, 225526, 225527, 225528, 225529, 225530, 225531, 225532, 225533, 225534, 225535, 225536, 225537, 225538, 225539, 225540, 225541, 225542, 225543, 225544, 225545

    Source checked on .

    Source data licence: CC BY 3.0.