Lycopus americanus

water horehound - Lycopus americanus 10JL31-3
water horehound - Lycopus americanus 10JL31-1

characteristics

Upright stems are branching, 4-angled and hairy. Leaves are opposite; deeply lobed lower leaves, finely serrated upper leaves. Tiny clusters of white flowers grow on the stem near the leaf axils. The entire plant turns a deep red-purple in the fall. Commonly mistaken for mint at first glance, however, the leaves lack aroma. It is though, a member of the mint family. Has both horizontal rhizomes and fibrous roots. Turns dark purple in the fall.

3,025,308 seeds/pound; starts from seed.

T SSN H W sun soil H2O fire N2 pH summer fall flower (seed)
P CW 0.6 S S/PS F-M M-W ••• - 5.2-7.8 green purple white

habitat

Roadside ditches, pond and lake edges, meadows.

uses

Attracts a variety of bees and flies.

North American aboriginals found the plant's medicinal qualities useful in treating stomach cramps. The roots were eaten raw or cooked. Also, used as a dye.

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common > name = have on site
T = type: A = annual | B = biennial | P = perennial | SS = subshrub | D = deciduous | C = coniferous
██ = cold stratify | ██ = cold stratify & scarify | ██ = plant directly | ██ = scarify | ██ = not from seed
SSN = season: C = cool | W = warm | Y = late
H = height (in metres) | W = width (in metres) | B = bunch | S = sod | SB = sod/bunch
sun: S = full sun | S/PS = sun or partial shade | PS = partial shade | SH = full shade
soil: F = fine | M = medium | C = coarse
H2O = moisture requirement: D = dry | M = moist | W = wet | Z = aquatic
fire = fire tolerance: - = unknown | X = none | = some | •• = moderate | ••• = high tolerance
N2 = nitrogen fixing: = yes
summer = foliage colour | fall = foliage (stem) colour | flower (seed) = flower (seed / fruit) colour, if conspicuous
pH = acidity - alkalinity