Narrowleaf Mountain Mint, Slender Mountain Mint, Common Horsemint, Koellia flexuosa, Pycnanthemum flexuosum
Prized for its long blooming season and exceptional value to pollinators, Pycnanthemum tenuifolium (Narrowleaf Mountain Mint) is a stiff, upright, many-branched perennial with aromatic foliage. Its very narrow, almost needle-like leaves create a fine-textured, silvery-green appearance and release a pleasant minty fragrance when crushed. From early summer into early fall, numerous small, white, two-lipped flowers are packed into dense clusters at the tips of the stems.
The nectar-rich flowers attract an impressive diversity of bees, butterflies, and other beneficial insects. Swallowtails are frequent nectar visitors. Narrowleaf Mountain Mint also serves as a larval host plant for the Gray Hairstreak butterfly and the Wavy-lined Emerald moth. The aromatic leaves have traditionally been used to flavor teas.
Tough, adaptable, and easy to grow, Narrowleaf Mountain Mint is an excellent choice for pollinator gardens, wildlife gardens, prairies, meadows, woodland edges, and naturalized areas where it has room to spread. Although it expands by rhizomes and can form sizable colonies, its spread is generally easy to manage by dividing or removing unwanted growth.
| Hardiness |
4 - 8 |
|---|---|
| Plant Type | Perennials |
| Plant Family | Lamiaceae |
| Common names | Mountain Mint |
| Exposure | Full Sun, Partial Sun |
| Season of Interest | Summer (Early, Mid, Late), Fall |
| Height | 2' - 3' (60cm - 90cm) |
| Spread | 2' - 3' (60cm - 90cm) |
| Spacing | 36" (90cm) |
| Maintenance | Low |
| Water Needs | Low, Average |
| Soil Type | Chalk, Clay, Loam, Sand |
| Soil pH | Acid, Neutral |
| Soil Drainage | Well-Drained |
| Characteristics | Fragrant, Showy |
| Native Plants | United States, Northeast, Pennsylvania, Rhode Island, Vermont, Connecticut, Delaware, Maine, Massachusetts, Maryland, New Hampshire, New Jersey, New York, Illinois, Indiana, Iowa, Kansas, Michigan, Midwest, Minnesota, Missouri, Nebraska, Ohio, Wisconsin, Southeast, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, West Virginia, Alabama, Arkansas, Florida, Georgia, Kentucky, Southwest, Texas, Oklahoma |
| Tolerances | Drought, Dry Soil, Rocky Soil, Clay Soil, Erosion |
| Attracts | Bees, Birds, Butterflies |
| Garden Uses | Ponds And Streams, Rain Gardens |
| Garden Styles | Butterfly Garden, Informal and Cottage, Pollinator Garden, Prairie and Meadow |
| Toxic to Humans | No known toxicity |
| Toxic to Cats | No known toxicity |
| Toxic to Dogs | No known toxicity |
| Toxic to Horses | No known toxicity |
| Hardiness |
4 - 8 |
|---|---|
| Plant Type | Perennials |
| Plant Family | Lamiaceae |
| Common names | Mountain Mint |
| Exposure | Full Sun, Partial Sun |
| Season of Interest | Summer (Early, Mid, Late), Fall |
| Height | 2' - 3' (60cm - 90cm) |
| Spread | 2' - 3' (60cm - 90cm) |
| Spacing | 36" (90cm) |
| Maintenance | Low |
| Water Needs | Low, Average |
| Soil Type | Chalk, Clay, Loam, Sand |
| Soil pH | Acid, Neutral |
| Soil Drainage | Well-Drained |
| Characteristics | Fragrant, Showy |
| Native Plants | United States, Northeast, Pennsylvania, Rhode Island, Vermont, Connecticut, Delaware, Maine, Massachusetts, Maryland, New Hampshire, New Jersey, New York, Illinois, Indiana, Iowa, Kansas, Michigan, Midwest, Minnesota, Missouri, Nebraska, Ohio, Wisconsin, Southeast, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, West Virginia, Alabama, Arkansas, Florida, Georgia, Kentucky, Southwest, Texas, Oklahoma |
| Tolerances | Drought, Dry Soil, Rocky Soil, Clay Soil, Erosion |
| Attracts | Bees, Birds, Butterflies |
| Garden Uses | Ponds And Streams, Rain Gardens |
| Garden Styles | Butterfly Garden, Informal and Cottage, Pollinator Garden, Prairie and Meadow |
| Toxic to Humans | No known toxicity |
| Toxic to Cats | No known toxicity |
| Toxic to Dogs | No known toxicity |
| Toxic to Horses | No known toxicity |
How many Pycnanthemum tenuifolium (Narrowleaf Mountain Mint) do I need for my garden?
| Plant | Quantity | |
|---|---|---|
| Pycnanthemum tenuifolium (Narrowleaf Mountain Mint) | N/A | Buy Plants |
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