Plantae > Tracheophyta > Magnoliopsida > Ericales > Ericaceae > Rhododendron > Rhododendron groenlandicum

Rhododendron groenlandicum (rusty labrador-tea; bog Labrador tea)


Wikipedia Abstract

Rhododendron groenlandicum (bog Labrador tea, formerly Ledum groenlandicum or Ledum latifolium), is a flowering shrub with white flowers and evergreen leaves that is used to make a herbal tea. It is a low shrub growing to 50 centimetres (20 in) (rarely up to 2 metres (6 ft 7 in)) tall with evergreen leaves 20–60 millimetres (0.79–2.36 in) long and 3–15 millimetres (0.12–0.59 in) broad. The leaves are wrinkled on top, densely hairy white to red-brown underneath, and have a leathery texture, curling at the edges. The tiny white flowers grow in hemispherical clusters and are very fragrant and sticky.
View Wikipedia Record: Rhododendron groenlandicum


Allergen Potential [1]  Medium
Screening - Summer [2]  Moderate
Screening - Winter [2]  Porous
Bloom Period [2]  Late Spring
Drought Tolerance [2]  Medium
Edible [3]  May be edible. See the Plants For A Future link below for details.
Fire Tolerance [2]  Medium
Flower Type [3]  Hermaphrodite
Frost Free Days [2]  3 months 5 days
Fruit/Seed Abundance [2]  Medium
Fruit/Seed Begin [2]  Spring
Fruit/Seed End [2]  Summer
Growth Form [2]  Multiple Stem
Growth Period [2]  Spring
Growth Rate [2]  Slow
Hazards [3]  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;
Leaf Type [3]  Evergreen
Lifespan [2]  Perennial
Pollinators [3]  Bees
Propagation [2]  Bare Root, Container, Seed
Root Depth [2]  18 inches (46 cm)
Scent [3]  The small white flowers are aromatic.
Seed Spread Rate [2]  Slow
Seed Vigor [2]  Medium
Shape/Orientation [2]  Erect
Structure [3]  Shrub
Usage [3]  The leaves are hung up in the clothes cupboard in order to repel insects; The branches are also placed among grain in order to keep mice away; A strong decoction of the leaves, or a tincture, is used to kill lice, mosquitoes, fleas and other insects; The leaves contain tannin; A brown dye is obtained from the plant;
Vegetative Spread Rate [2]  None
Flower Color [2]  White
Foliage Color [2]  Gray-Green
Height [3]  4.92 feet (1.5 m)
Width [3]  4.92 feet (1.5 m)
Hardiness Zone Minimum [2]  USDA Zone: 3 Low Temperature: -40 F° (-40 C°) → -30 F° (-34.4 C°)
Light Preference [2]  Mixed Sun/Shade
Soil Acidity [2]  Moderate Acid
Soil Fertility [2]  Infertile
Water Use [2]  Moderate
View Plants For A Future Record : Rhododendron groenlandicum

Protected Areas





North America;

External References

USDA Plant Profile



Attributes / relations provided by
1Derived from Allergy-Free Gardening OPALS™, Thomas Leo Ogren (2000)
2USDA Plants Database, U. S. Department of Agriculture
3Plants For A Future licensed under a Creative Commons License
4Making The Forest And Tundra Wildlife Connection
5HOSTS - a Database of the World's Lepidopteran Hostplants Gaden S. Robinson, Phillip R. Ackery, Ian J. Kitching, George W. Beccaloni AND Luis M. Hernández
6Biological Records Centre Database of Insects and their Food Plants
7Ben-Dov, Y., Miller, D.R. & Gibson, G.A.P. ScaleNet 4 November 2009
8Small, E. 1976. Insect pollinators of the Mer Bleue peat bog of Ottawa. Canadian Field Naturalist 90:22-28.
Abstract provided by DBpedia licensed under a Creative Commons License