General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Water Preferences: Wet Mesic
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Minimum cold hardiness: Zone 2 -45.6 °C (-50 °F) to -42.8 °C (-45°F)
Maximum recommended zone: Zone 8b
Plant Height: 1 to 3 feet
Flower Color: White
Flower Time: Summer
Underground structures: Rhizome
Uses: Erosion control
Culinary Herb
Will Naturalize
Eating Methods: Tea
Wildlife Attractant: Bees
Propagation: Seeds: Sow in situ
Can handle transplanting
Propagation: Other methods: Cuttings: Stem
Cuttings: Root
Pollinators: Various insects
Containers: Suitable in 1 gallon
Suitable in 3 gallon or larger
Miscellaneous: Tolerates poor soil

Common names
  • Narrowleaf Mountain Mint
  • Slender Mountain Mint
  • Narrow-Leaved Mountain Mint
  • Common Horsemint
  • Virginia Thyme

This plant is tagged in:

  • Posted by Catmint20906 (PNW WA half hour south of Olympia - Zone 8a) on Aug 3, 2014 11:50 AM concerning plant:
    According to the NPIN, mountain mints have special value to native, bumble, and honey bees, and support conservation biological control by attracting beneficial insects to the garden.

    Mountain mints are also considered a key nectar source for monarchs and other butterflies.
  • Posted by BrendaVR (Ontario, Canada - Zone 6a) on Aug 23, 2014 8:57 AM concerning plant:
    To help differentiate between the two very similar Mountain Mints (P. virginianum and P. tenuifolium), look for slight hairiness on the stem and leaves, or lack thereof.
    P. tenuifolium does not have hairs on the stem or leaves (it is glabrous), whereas P. virginianum has this pubescence/hairiness on the stems and leaves. Other than that, their leaf shape/form is nearly identical.
  • Posted by Cyclaminist (Minneapolis, Minnesota - Zone 5a) on May 3, 2015 8:19 PM concerning plant:
    Unlike Virginia Mountain Mint (Pycnanthemum virginianum), this one doesn't have fragrant leaves, or at least my plants don't. The leaves taste a little bitter, but that's all. But all mountain-mint flowers provide food for short-tongued bees and wasps. Because the flowers are tiny, these insects can reach into them to drink the nectar. A great plant to attract predators that will eat garden pests.
  • Posted by ILPARW (southeast Pennsylvania - Zone 6b) on Mar 5, 2018 7:43 PM concerning plant:
    This nice fine-textured forb has a native range from New England through Minnesota then down deep into the South US in upland and wet meadows and barrens. It spreads by rhizomes (underground root-like stems) to become a colony.
Plant Events from our members
Catmint20906 On June 4, 2015 Obtained plant
lovesblooms On March 1, 2020 Seeds sown
winter sow
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