Tennessee Smart Yards Native Plants

A comprehensive database of Tennessee native plants

Slender Mountain Mint, Narrowleaf Mountainmint

Slender Mountain Mint, Narrowleaf Mountainmint

Pycnanthemum tenuifolium

Full to part sun, moderately wet to moderately dry moisture level, tolerates a wide range of soils including clay, moderately acid to neutral pH.  18-30 inches height, blooms in summer, white flowers, spreads by rhizomes and re-seeding.

Germination Code:  A, D.  Very small seeds at 378,000 per ounce.

Native Region:  Statewide

“Mountain” is a bit of a misnomer since the plant typically grows in the wild in dry woods, dry prairies and along roadsides.  All parts of the plant emit a strong aroma of mint when crushed.  Dried leaves can be used as a flavoring and in tea.  Attractive flowers.  Easy to grow.  Vigorous and sometimes aggressive grower.  Attracts birds, butterflies and bees.

flower;sun;wet;clay
flower;sun;wet;loam
flower;sun;wet;sand
flower;sun;medium;clay
flower;sun;medium;loam
flower;sun;medium;sand
flower;sun;dry;clay
flower;sun;dry;loam
flower;sun;dry;sand
flower;sun/shade;wet;clay
flower;sun/shade;wet;loam
flower;sun/shade;wet;sand
flower;sun/shade;medium;clay
flower;sun/shade;medium;loam
flower;sun/shade;medium;sand
flower;sun/shade;dry;clay
flower;sun/shade;dry;loam
flower;sun/shade;dry;sand

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One response to “Slender Mountain Mint, Narrowleaf Mountainmint

  1. joystewart October 27, 2014 at 6:16 pm

    When I first selected this plant for my native gardens, I specifically picked it because it was the only Pycnanthemum species in the seed catalog that was not listed as aggressive. So I figured it should be safe since most of the Mountain Mints are very aggressive. The first 3 years were just fine and it mixed nicely with other plant species. On the 4th year, I suddenly noticed that my whole meadow planting is mostly Slender Mountain Mint. I have a beautiful small field of it, which is striking when it is in bloom, but definitely not what I had in mind. It may not be aggressive in the short run but it surely is in the long-run. Had I known, I would have really scaled back on the amount of seed that I used. However, I imagine that this meadow will keep on changing over time and it will be interesting to see what this plant does in the future.

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