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.
It is reported from Greenland, as well as from every province and territory in Canada and in the northeastern and northwestern United States (New England, New York, Pennsylvania, Michigan, Wisconsin, Minnesota, Idaho, Washington, Oregon and Alaska). It grows in bogs and on wet shores, and sometimes on rocky alpine slopes.
It is often used as a spice in dishes containing wild game. It is also used as flavoring in distilled spirits.
- "Rhododendron groenlandicum (Oeder) Kron & Judd". Tropicos. Retrieved February 2, 2014.
- Kron, Kathleen Anne; Judd (1990). "Phylogenetic Relationships within the Rhodoreae (Ericaceae) with Specific Comments on the Placement of Ledum". Systematic Botany. 15 (1): 67. doi:10.2307/2419016.
- Peterson, R. T. and McKenny, M. A Field Guide to Wildflowers Northeastern and North-central North America.
- "Rhododendron groenlandicum". Systematic Botany. Flora of North America. 15: 460. 1990. doi:10.2307/2419016.
- USDA PLANTS database: Ledum groenlandicum
- Description of Rhododendron groenlandicum at the American Rhododendron Society
- Photograph of Rhododendron groenlandicum plus description at the Washington Native Plant Society
- Rhododendron groenlandicum at the Connecticut Botanical Society
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