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Pycnanthemum tenuifolium (Narrowleaf mountain mint) | NPIN
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Pycnanthemum tenuifolium (Narrowleaf mountain mint)
Bloodworth, Stefan

Pycnanthemum tenuifolium

Narrowleaf mountain mint, Slender mountain mint, Common horsemint

Lamiaceae (Mint Family)

USDA Symbol: PYTE

USDA Native Status:

This stiff, erect, compact, clump-forming mint has narrow leaves subtending the flower clusters. The minty-smelling plants are 20-30 in. tall and have terminal flower clusters composed of numerous, small, two-lipped corollas varying from whitish to lavender, with purple spots.

 

Plant Characteristics

Duration: Perennial
Habit: Herb
Size Notes: Normally around 2 feet tall, but can reach 4 feet in rich soil.
Leaf: Pale green
Flower:
Fruit: Black
Size Class: 1-3 ft.

Bloom Information

Bloom Color: White
Bloom Time: Jun , Jul , Aug , Sep
Bloom Notes: Begins blooming when grown to about one foot wide.

Distribution

USA: AL , AR , CT , DC , DE , FL , GA , IA , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , NC , NE , NH , NJ , NY , OH , OK , PA , RI , SC , TN , TX , VA , VT , WI , WV
Canada: ON
Native Distribution: ME to GA, w. to WI, IA, e. KS & e. TX
Native Habitat: Upland prairies; dry, rocky, open woods; low, wet areas as well as fast-draining Post Oak woods and pine barrens

Growing Conditions

Water Use: Medium
Light Requirement: Sun , Part Shade
Soil Moisture: Dry , Moist
Soil pH: Acidic (pH<6.8)
Drought Tolerance: Medium
Soil Description: Various moist to dry soils.
Conditions Comments: The similar and closely related P. flexuosum is a more coastal species.

Benefit

Use Ornamental: Silvery foliage and long blooming period.
Use Wildlife: Bees and butterflies use flowers. Deer eat leaves. Numerous animals eat seeds.
Use Food: Dried leaves used as flavoring and in teas.
Use Other: Rub leaves on skin to repel mosquitoes.
Conspicuous Flowers: yes
Interesting Foliage: yes
Fragrant Foliage: yes
Attracts: Birds , Butterflies
Nectar Source: yes
Deer Resistant: No

Value to Beneficial Insects

Special Value to Native Bees
Special Value to Bumble Bees
Special Value to Honey Bees
Supports Conservation Biological Control

This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.

Propagation

Propagation Material: Root Division , Seeds
Description: Best propagated by cuttings or divisions. Tip cuttings are easy and reliable, taken in June. To make divisions, lift the clump in late fall or early spring and use pruning shears to divide the shallow root system. Seeds are so tiny it is best to plant
Seed Collection: Collect seed after the first few frosts. To check for ripe seed, bend over the stem and shake it; if black seeds fall out, collect right away. Store in sealed, refrigerated containers.
Seed Treatment: No pretreatment necessary.
Commercially Avail: yes
Maintenance: To keep it from getting too wide, divide it by the roots occasionally.

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From the National Suppliers Directory

According to the inventory provided by Associate Suppliers, this plant is available at the following locations:

American Native Nursery - Quakertown, PA
* Available Online from Wildflower Center Store

Bibliography

Bibref 1620 - Gardening with Native Plants of the South (Reprint Edition) (2009) Wasowski, S. with A. Wasowski
Bibref 841 - Native Alternatives to Invasive Plants (2006) Burrell, C. C.
* The Midwestern Native Garden: Native Alternatives to Nonnative Flowers and Plants An Illustrated Guide (2011) Adelman, Charlotte and Schwartz, Bernard L.

Search More Titles in Bibliography

Recommended Species Lists

Find native plant species by state. Each list contains commercially available species suitable for gardens and planned landscapes. Once you have selected a collection, you can browse the collection or search within it using the combination search.

View Recommended Species page

Additional resources

USDA: Find Pycnanthemum tenuifolium in USDA Plants
FNA: Find Pycnanthemum tenuifolium in the Flora of North America (if available)
Google: Search Google for Pycnanthemum tenuifolium

Metadata

Record Modified: 2013-09-11
Research By: TWC Staff

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