Photo by Melody

PlantFiles: Aquatic Mint, Water Mint, Watermint
Mentha aquatica

Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Mentha (MEN-thuh) (Info)
Species: aquatica (a-KWA-tee-kuh) (Info)

13 members have or want this plant for trade.

Ponds and Aquatics

Unknown - Tell us

36-48 in. (90-120 cm)

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)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Sun to Partial Shade

Handling plant may cause skin irritation or allergic reaction

Bloom Color:

Bloom Time:
Late Summer/Early Fall

Grown for foliage

Other details:
Very high moisture needs; suitable for bogs and water gardens
May be a noxious weed or invasive
This plant is attractive to bees, butterflies and/or birds

Soil pH requirements:
Unknown - Tell us

Patent Information:

Propagation Methods:
By dividing the rootball
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From herbaceous stem cuttings
By simple layering
By tip layering
By serpentine layering
By stooling or mound layering

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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to view:

By kennedyh
Thumbnail #1 of Mentha aquatica by kennedyh

By Baa
Thumbnail #2 of Mentha aquatica by Baa

By Wingnut
Thumbnail #3 of Mentha aquatica by Wingnut

By Wingnut
Thumbnail #4 of Mentha aquatica by Wingnut

By kennedyh
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Thumbnail #6 of Mentha aquatica by Xenomorf

By peachespickett
Thumbnail #7 of Mentha aquatica by peachespickett

There are a total of 16 photos.
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5 positives
2 neutrals
No negatives

Gardeners' Notes:

Positive N_R_23 On Jul 8, 2013, N_R_23 from San Antonio, TX wrote:

First year with this plant. Growing in the shade in water filled aluminum containers which is attracting frogs (which like to rest among, under the leaves), but has to be constantly filled in the summer weather. Still no blooms, but is thriving. Has a unique taste, different from any other mint I've tried. More of a black peppery spice with a slightly cool after taste. Unique experience growing this plant

Positive YngDons_Koi_pon On Jan 10, 2012, YngDons_Koi_pon from Mountain View Acres, CA wrote:

Im In Victorville Ca, & I Uprooted A Few Mint Plants From My Flower Bed & Transfered Them To my 4,000gal Koi Pond. I Put Some On Top Of The Water & Put A fine Net Around The Roots To Protect Them From The Fish & I Submerged Some Just To Test The Possibilities of New Pond Plants & They Did Better Than The Regular Pond Plants Still Green In The Cold Winter!

Positive akilgore42 On Apr 5, 2010, akilgore42 from Spokane, WA wrote:

Found this growing wild in an untended part of my garden that receives a lot of water. It spreads easily due to sending out runners, therefore should be contained if you do not want it to spread. I transplanted some to a patio pot in the fall, and hope to keep it contained there. It has pretty purple flowers and the purplish leaves and stems have a lovely mint scent. I have dried some to make mint tea and hope to find more uses for it. I tried to grow some indoors, but I think it was too dry an environment. It loves growing outside next to a sprinkler in a spot that receives part sun/part shade.

Positive peachespickett On Mar 18, 2008, peachespickett from Huntington, AR wrote:

Planted this around our creek on our property here in Western Arkansas. Has spread slowly, only 5-6 feet in three years, probably due to constantly changing erosion and water levels, but looks great every summer. I've also grown it in a hanging basket, it just kept branching and branching.

Positive Wingnut On Jun 16, 2004, Wingnut from Spicewood, TX (Zone 8b) wrote:

Wonderful in the water garden! I love the scent when I'm cleaning out around it and brush up against it. Grows fast, so you'll have plenty to give to friends.

Great in sun or shade.

Neutral Michaelp On Nov 11, 2003, Michaelp from Glendale, UT (Zone 5a) wrote:

Good for herbal baths and herbal pillows--but considered too pungent for cooking--also medicinal uses---

Neutral Baa On Jan 24, 2002, Baa wrote:

A strongly scented perennial mint from Europe and Asia.

Has ovate to ovate-lanceolate, mid green (sometimes purplish), opposite, toothed, veined leaves which can be hairy or hairless. The stems are often purple. Bears tiny, densely crowded, purple, tubular flowers borne in whorls. The whole plant is heavily mint (sometimes almost sickly sweet) scented.

Flowers July-October

Likes boggy places or shallow ponds in poor soil with full sun to partial shade.

Can be invasive, best grown in a pot planted 6 inches below the water of a pond or just in a pot in a bog garden.


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

Phoenix, Arizona
Huntington, Arkansas
Mountain View Acres, California
Chicago, Illinois
Thackerville, Oklahoma
San Antonio, Texas
Spicewood, Texas
Spokane, Washington
Stanwood, Washington

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