Photo by Melody

PlantFiles: Slender Mountain Mint, Narrow-leaved Mountain Mint
Pycnanthemum tenuifolium

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Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Pycnanthemum (pik-NAN-thee-mum) (Info)
Species: tenuifolium (ten-yoo-ih-FOH-lee-um) (Info)

5 vendors have this plant for sale.

6 members have or want this plant for trade.

Category:
Perennials

Height:
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)

Spacing:
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)

Hardiness:
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:
Full Sun
Sun to Partial Shade

Danger:
Unknown - Tell us

Bloom Color:
White/Near White

Bloom Time:
Mid Summer
Late Summer/Early Fall

Foliage:
Grown for foliage
Herbaceous
Silver/Gray
Blue-Green
Smooth-Textured

Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Non-patented

Propagation Methods:
From seed; direct sow outdoors in fall

Seed Collecting:
Unknown - Tell us

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There are a total of 12 photos.
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Profile:

3 positives
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive Erutuon On Apr 25, 2011, Erutuon from Minneapolis, MN wrote:

Bought a mountain-mint at the Friends School Plant Sale (2009?) as Pycnanthemum flexuosum. I assume it's actually this species, since it was supposed to be Midwest-native, and photos of P. flexuosum look different from my plant.

Positive papaverred On May 21, 2010, papaverred from Fairfax, VA wrote:

Native, less-invasive (as mints go), can grow in deep shades, and an insect magnet. Tall 20 plant in the shade. Provides some height and texture in the woodland garden. Make sure to deadhead or else a carpet of seedlings will greet you in the spring.

Neutral podster On May 20, 2008, podster from Deep East Texas, TX (Zone 8a) wrote:

I received this plant from a PDN fall plant sale last Nov. It was incredibly root bound so I repotted to a 1 gallon pot. In May, again unbelieveably root bound it went in ground. Located in a morning thru noon sunny spot with sand/gravel based soil as we receive drenchings.

It has a delicate foliage and a delicate fragrance. This plant is budding to bloom in the middle of May.

I hold reservations about rating this plant as I've not made a full year with it. I am on the southern hardiness zone for this plant. Also, for some gardeners, the root system might present a problem. Will try to update this in a year...

Positive PurplePansies On Jun 21, 2005, PurplePansies from Deal, NJ (Zone 7a) wrote:

This plant is a U.S. native to the eastern portion of the United States. (to the Mississippi I think? :) )..... It is a tallish/gangly plant/mint. It likes partial sun/partial shade the best and can adapt to deeper shade and brighter/hotter sun. It is fairly easy to grow. It likes slightly less to well drained soil. But it doesn't like to dry out too much. It gets fairly unshowy white flowers in summer. (resembles and unshowy eupatorium).... The scent is not as strong as say spearmint or peppermint but is pleasent. It has a minty scent of its own but I think most closely resembles pennyroyal with a prevalent "tea" note. Not a showy plant, good for a wildflower/woodland garden. Said to (as most mints) have some medicinal properties (similar I think to peppermint? (medicinal attributes) ....)..... It is also a good plant for beneficial insects and bees. Good also for an herb garden.
Best attribute is it is pleasently fragrant, is an easy to grow U.S. native and has some medicinal properties and can grow fairly well in shade and of course is good for good insects. :)

Regional...

This plant has been said to grow in the following regions:

Marietta, Georgia
Lisle, Illinois
Minneapolis, Minnesota
Cole Camp, Missouri
Elsberry, Missouri
Lincoln, Nebraska
Glouster, Ohio
Royersford, Pennsylvania
West Chester, Pennsylvania
Fairfax, Virginia
Appleton, Wisconsin



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