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Lycopus americanus - Muhl.

Water Horehound

Author	Muhl.	Botanical references	200, 235
Family	Labiatae	Genus	Lycopus
Synonyms
Known Hazards	None known
Range	N. America - Newfoundland to British Columbia, south to Florida, Texas, Utah and California.
Habitat	Low moist or wet places[222, 274].
Edibility Rating	1 (1-5)	Medicinal Rating	3 (1-5)

Physical Characteristics

Perennial growing to 0.5m.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils. The plant prefers acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It requires moist or wet soil.

Habitats

Bog Garden;

Edible Uses

Edible Parts: Root.

Root - raw or cooked[207]. This contradicts with the report in [200] that the plant does not form tubers on its rhizomes.

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

Astringent; Narcotic; Sedative.

The whole plant is used as an astringent, hypoglycaemic, mild narcotic and mild sedative[4, 102, 222, 238]. It also slows and strengthens heart contractions[238]. The plant has been shown to be of value in the treatment of hyperthyroidism[222, 238], it is also used in the treatment of coughs, bleeding from the lungs and consumption, excessive menstruation etc[4, 238]. It should not be prescribed for pregnant women or patients with hypothyroidism[238]. The plant is harvested as flowering begins and can be use fresh or dried, in an infusion or as a tincture[4, 238].

Other Uses

Dye.

The juice gives a permanent colour to linen and wool and does not wash out[207]. The colour is not mentioned[K].

Cultivation details

Succeeds in damp meadows or in wet places by ponds or streams[200].

Propagation

Seed - sow spring or autumn in a cold frame[238]. Prick out the seedlings into individual pots when they are large enough to handle and grow them on in the greenhouse for their first year. Plant them out into their permanent positions in early summer. Division in spring or autumn[238]. Larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the spring.

Links

References

[K] Ken Fern
Notes from observations, tasting etc at Plants For A Future and on field trips.

[4] Grieve. A Modern Herbal. Penguin 1984 ISBN 0-14-046-440-9
Not so modern (1930's?) but lots of information, mainly temperate plants.

[102] Kavasch. B. Native Harvests. Vintage Books 1979 ISBN 0-394-72811-4
Another guide to the wild foods of America.

[200] Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992 ISBN 0-333-47494-5
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.

[207] Coffey. T. The History and Folklore of North American Wild Flowers. Facts on File. 1993 ISBN 0-8160-2624-6
A nice read, lots of information on plant uses.

[222] Foster. S. & Duke. J. A. A Field Guide to Medicinal Plants. Eastern and Central N. America. Houghton Mifflin Co. 1990 ISBN 0395467225
A concise book dealing with almost 500 species. A line drawing of each plant is included plus colour photographs of about 100 species. Very good as a field guide, it only gives brief details about the plants medicinal properties.

[235] Britton. N. L. Brown. A. An Illustrated Flora of the Northern United States and Canada Dover Publications. New York. 1970 ISBN 0-486-22642-5
Reprint of a 1913 Flora, but still a very useful book.

[238] Bown. D. Encyclopaedia of Herbs and their Uses. Dorling Kindersley, London. 1995 ISBN 0-7513-020-31
A very well presented and informative book on herbs from around the globe. Plenty in it for both the casual reader and the serious student. Just one main quibble is the silly way of having two separate entries for each plant.

[274] Diggs, Jnr. G.M.; Lipscomb. B. L. & O'Kennon. R. J Illustrated Flora of North Central Texas Botanical Research Institute, Texas. 1999 ISBN 1-889878-01-4
An excellent flora, which is also available on-line.

Readers Comments

Plants for a Future does not verify the accuracy of reader comments, use at your own risk. In particular Plants For A Future can not take any responsibility for any adverse effects from the use of plants. You should always consult a professional before using plants medicinally.

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