Practical
Plants

Ledum columbianum

a perennial woody evergreen member of the Ledum genus in the family Ericaceae.

No photo available

Taxonomy and growth

Family
Ericaceae
Genus
Ledum
Life cycle
perennial
Foliage
evergreen
Woodiness
woody
Height
1 m
Flower type
hermaphrodite

Uses

Toxicity

Toxicity warning. The historical record reports a hazard for this plant. Do not use it to decide which parts are safe to eat or use medicinally.

This section contains historical Plants For A Future notes marked noncommercial.

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[4].

Edible uses

This section contains historical Plants For A Future notes marked noncommercial.

A tea is made from the leaves[4][9]. 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[4].

Product or use
Condiment
Product or use
Tea

Medicinal uses

Historical medicinal uses. These records describe reported uses. They do not establish safety or effectiveness. Ask a qualified health professional before using any plant medicinally.

This section contains historical Plants For A Future notes marked noncommercial.

The leaves and young flowering shoots re astringent, diaphoretic, diuretic, laxative and stomachic[4].

Product or use
Astringent
Product or use
Diaphoretic
Product or use
Diuretic
Product or use
Laxative
Product or use
Stomachic

Material uses

This section contains historical Plants For A Future notes marked noncommercial.

The leaves are used to repel moths, mice, rats etc[4].

Product or use
Repellent

Environment

Range
Western N. America - Washington to California.
Habitat
Near the coast in wet peaty places and open pine and redwood forests below 1000 metres[5].
Light
partial sun
Shade tolerance
permanent shade
Water
moderate
Soil textures
sandy, loamy, clay
Soil pH
very acid, acid
Tolerates Nutritionally Poor Soil
No
Drought
intolerant

Propagation

This section contains historical Plants For A Future notes marked noncommercial.

Seed - surface sow in a shady part of the greenhouse in February or March[10][3]. Another report says that the seed is best sown in the autumn as soon as it is ripe[6]. 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[10]. Cuttings of half-ripe wood, 5 - 8cm with a heel, July/August in a frame. Plant out in spring. Fair percentage[10]. Cuttings of mature wood, November/December in a frame[3]. Layering in the autumn. Takes 12 months[10]. Division.

Cultivation

This section contains historical Plants For A Future notes marked noncommercial.

Requires a lime-free loam or peaty soil[1][2]. Prefers a moist humus-rich acid soil in shade or semi-shade[7]. 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[7]. Plants are hardy to about -15°c[7]. The leaves are covered in tiny spots or glands from which a strong, resinous scent is given off[8]. The flowers also have an aromatic perfume[8]. Very closely related to L. glandulosum[1], and considered to be no more than a sub-species of it by some botanists[7]. Plants benefit from removing the dead flowers before they set seed[6]. This prevents them putting too much energy into seed production at the expense of more flowers and leaves.

References

  1. F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951-00-00

    ↩1↩2

  2. Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray 1981-00-00

    ↩

  3. Dirr. M. A. and Heuser. M. W. The Reference Manual of Woody Plant Propagation. Athens Ga. Varsity Press 1987-00-00 ISBN 0942375009

    ↩1↩2

  4. Schofield. J. J. Discovering Wild Plants - Alaska, W. Canada and the Northwest.

    ↩1↩2↩3↩4↩5

  5. Phillips. R. & Rix. M. Shrubs. Pan Books 1989-00-00 ISBN 0-330-30258-2

    ↩

  6. Brickell. C. The RHS Gardener's Encyclopedia of Plants and Flowers Dorling Kindersley Publishers Ltd. 1990-00-00 ISBN 0-86318-386-7

    ↩1↩2

  7. Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992-00-00 ISBN 0-333-47494-5

    ↩1↩2↩3↩4

  8. Genders. R. Scented Flora of the World. Robert Hale. London. 1994-00-00 ISBN 0-7090-5440-8

    ↩1↩2

  9. Moerman. D. Native American Ethnobotany Timber Press. Oregon. 1998-00-00 ISBN 0-88192-453-9

    ↩

  10. Sheat. W. G. Propagation of Trees, Shrubs and Conifers. MacMillan and Co 1948-00-00

    ↩1↩2↩3↩4

Edit this page