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Toxic parts

Plants contain a narcotic toxin called Ledel. This toxin only causes problems if the leaves are cooked for a long period in a closed container[1].

Edible uses


A fragrant and soothing tea is made from the leaves[2][3][4][5][1]. The spicy leaves make a very palatable and refreshing tea[6]. The North American Indians would often flavour this tea with the roots of liquorice fern, Polypodium glycyrrhiza[7]. When lemon is added they can be used as iced tea[6]. The leaves were once added to beer in order to make it heady[6]. Some caution is advised, see the notes above on toxicity. It would be better to brew the tea in cold water by leaving it in a sunny place, or to make sure that it is brewed for a short time only in an open container. The leaves are used as a flavouring, they are a bayleaf substitute[1].

Unknown part

Material uses

The leaves are hung up in the clothes cupboard in order to repel insects[3]. The branches are also placed among grain in order to keep mice away[3]. A strong decoction of the leaves, or a tincture, is used to kill lice, mosquitoes, fleas and other insects[3][8][9].

The leaves contain tannin[3].

A brown dye is obtained from the plant[10].

Medicinal uses(Warning!)

Labrador tea was employed medicinally by several native North American Indian tribes who used it to treat a variety of complaints[10]. In modern herbalism it is occasionally used externally to treat a range of skin problems.

The leaves are analgesic, blood purifier, diaphoretic, diuretic, pectoral and tonic[3][1][11][10]. A tea is taken internally in the treatment of headaches, asthma, colds, stomach aches, kidney ailments etc[11][10]. Externally, it is used as a wash for burns, ulcers, itches, chapped skin, stings, dandruff etc[11][9][10]. An ointment made from the powdered leaves or roots has been used to treat ulcers, cracked nipples, burns and scalds[10].

The plant is apparently a mild narcotic, it was taken by Indian women three times daily shortly before giving birth[8]


Ecosystem niche/layer

Ecological Functions

Nothing listed.


Nothing listed.


Nothing listed.


Seed - surface sow in a shady part of the greenhouse in February or March[12][13]. Another report says that the seed is best sown in the autumn as soon as it is ripe[14]. Germination is variable and can be quite slow. Prick out the seedlings into individual pots as soon as they are large enough to handle and grow the pots on in a shady frame for 18 months before planting them out into their permanent positions[12].

Cuttings of half-ripe wood, 5 - 8cm with a heel, July/August in a frame. Plant out in spring. Fair percentage[12]. Cuttings of mature wood, November/December in a frame[13]. Layering in the autumn. Takes 12 months[12].


Practical Plants is currently lacking information on propagation instructions of Ledum groenlandicum. Help us fill in the blanks! Edit this page to add your knowledge.


Requires a lime-free loam or peaty soil[15][16]. Prefers a moist humus-rich acid soil in shade or semi-shade[17]. Plants flower more freely when grown in a sunny position. Plants grow better if they have certain fungal associations in the soil. The best way of providing this is to incorporate some soil from around well-growing established plants into the soil for the new plant[17].

Hardy to at least -15°c[17]. The leaves and the flowers are very aromatic[18][19]. Plants benefit from removing the dead flowers before they set seed[14]. This prevents them putting too much energy into seed production at the expense of more flowers and leaves. This species is considered by some botanists to be no more than a sub-species of L. palustre[16][20].

A good bee plant[3].


Problems, pests & diseases

Associations & Interactions

There are no interactions listed for Ledum groenlandicum. Do you know of an interaction that should be listed here? edit this page to add it.

Polycultures & Guilds

There are no polycultures listed which include Ledum groenlandicum.




None listed.


None listed.

Full Data

This table shows all the data stored for this plant.

Binomial name
Ledum groenlandicum
Imported References
Edible uses
Medicinal uses
Material uses & Functions
Edible uses
None listed.
Material uses
None listed.
Medicinal uses
None listed.
Functions & Nature
Provides forage for
Provides shelter for
Hardiness Zone
Heat Zone
full sun
permanent shade
Soil PH
Soil Texture
Soil Water Retention
Environmental Tolerances
    Native Climate Zones
    None listed.
    Adapted Climate Zones
    None listed.
    Native Geographical Range
    None listed.
    Native Environment
    None listed.
    Ecosystem Niche
    None listed.
    Root Zone Tendancy
    None listed.
    Deciduous or Evergreen
    Herbaceous or Woody
    Life Cycle
    Growth Rate
    Mature Size
    Flower Colour
    Flower Type


    1. ? Schofield. J. J. Discovering Wild Plants - Alaska, W. Canada and the Northwest. ()
    2. ? 2.02.1 Hedrick. U. P. Sturtevant's Edible Plants of the World. Dover Publications ISBN 0-486-20459-6 (1972-00-00)
    3. ? Grieve. A Modern Herbal. Penguin ISBN 0-14-046-440-9 (1984-00-00)
    4. ? 4.04.1 Saunders. C. F. Edible and Useful Wild Plants of the United States and Canada. Dover Publications ISBN 0-486-23310-3 (1976-00-00)
    5. ? 5.05.1 Kavasch. B. Native Harvests. Vintage Books ISBN 0-394-72811-4 (1979-00-00)
    6. ? Facciola. S. Cornucopia - A Source Book of Edible Plants. Kampong Publications ISBN 0-9628087-0-9 (1990-00-00)
    7. ? 7.07.1 Turner. N. J. Food Plants of Coastal First Peoples UBC Press. Vancouver. ISBN 0-7748-0533-1 (1995-00-00)
    8. ? Coffey. T. The History and Folklore of North American Wild Flowers. Facts on File. ISBN 0-8160-2624-6 (1993-00-00)
    9. ? Bown. D. Encyclopaedia of Herbs and their Uses. Dorling Kindersley, London. ISBN 0-7513-020-31 (1995-00-00)
    10. ? Moerman. D. Native American Ethnobotany Timber Press. Oregon. ISBN 0-88192-453-9 (1998-00-00)
    11. ? Foster. S. & Duke. J. A. A Field Guide to Medicinal Plants. Eastern and Central N. America. Houghton Mifflin Co. ISBN 0395467225 (1990-00-00)
    12. ? Sheat. W. G. Propagation of Trees, Shrubs and Conifers. MacMillan and Co (1948-00-00)
    13. ? 13.013.1 Dirr. M. A. and Heuser. M. W. The Reference Manual of Woody Plant Propagation. Athens Ga. Varsity Press ISBN 0942375009 (1987-00-00)
    14. ? 14.014.1 Brickell. C. The RHS Gardener's Encyclopedia of Plants and Flowers Dorling Kindersley Publishers Ltd. ISBN 0-86318-386-7 (1990-00-00)
    15. ? F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press (1951-00-00)
    16. ? Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray (1981-00-00)
    17. ? Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press ISBN 0-333-47494-5 (1992-00-00)
    18. ? Thomas. G. S. Ornamental Shrubs, Climbers and Bamboos. Murray ISBN 0-7195-5043-2 (1992-00-00)
    19. ? Genders. R. Scented Flora of the World. Robert Hale. London. ISBN 0-7090-5440-8 (1994-00-00)
    20. ? 20.020.1 ? Flora Europaea Cambridge University Press (1964-00-00)