Lamiaceae
slender mountain mint
Pycnanthemum tenuifolium
Synonyms
Pycnanthemum flexuosum
Other Common Names
narrow-leaf mountain mint
Plant Type
Herbaceous Wildflower
Life Cycle
Perennial
Typical Size
2-4 ft. tall
2-3 ft. wide
Tolerant of
Occasional Flooding
Inolerant of
Dry Soil
Propagation
By seed, By cutting, By division
Plant Propagation Notes
Take tip cuttings in June. No pretreatment is needed for seed germination.
Plant Planting Notes
Provide about 2 ft spacing
Plants/Diseases
No significant disease or pest issues.
Wildlife Benefits
Nectar/pollen source for pollinating insects, Host plant for butterfly larvae
Leaves
Leaves are opposite and linear; 1-3 inches long and very narrow (needle-like)
Flowers
The white, sometimes pink, showy flowers are on a cyme.
Edibility
flowers and leaves are edible

USDA Hardiness Zones
4, 5, 6, 7, 8
Light Exposure
Full Sun, Part Sun/Shade
Soil Moisture
Moist
Soil Drainage
Well-drained
Soil pH
Acidic (less than 6.0)
Native in South Carolina?
Yes
Plant Native Habitat
Bogs, wet meadows, moist to wet forests
Global Conservation Status (NatureServe)
Secure (G5)
Federal Conservation Status (USFWS)
Not Listed
Distribution Notes
uncommon in the coastal plain and sandhill regions, common in the piedmont and mountain regions