Species Factsheets

Ledum groenlandicum

Labrador Tea

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State Status: Pennsylvania Rare (PR)
PBS Status: Pennsylvania Rare (PR)
Federal Status:

Global Rank: G5 rank interpretation
State Rank: S3

Did You Know?

This species makes Labrador tea, which has been used historically for colds, skin complaints and malignancies.

Ledum groenlandicum


Labrador tea (Ledum groenlandicum) is an evergreen shrub with dense, orangish or brownish, woolly hairs on the branchlets. The leaves are thick and leathery, tend to have the margin curled under, and have abundant orangish or brownish (or whitish when young), woolly hairs on the undersurface. The white flowers have five petals and appear in May or June. The fruit is a cylindrical-shaped capsule. The species is easily recognized at any time of the year.

Rank Justification

Vulnerable in the nation or state due to a restricted range, relatively few populations (often 80 or fewer), recent and widespread declines, or other factors making it vulnerable to extirpation.


Labrador tea has been given a status of Rare on the Plants of Special Concern in Pennsylvania list by the Pennsylvania Biological Survey and the Department of Conservation and Natural Resources, based on its rather localized distribution in the state and peatland habitat. It may be abundant where established


The species grows in bogs and other types of peaty wetlands.

Survey Dates

Flowers June





Conservation Status Map


Map Legend

NatureServe. 2017. NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. Available https://explorer.natureserve.org.


  • NatureServe. 2018. NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. Available at https://www.natureserve.org/explorer
  • Pennsylvania Natural Heritage Program. 2018.
  • Rhoads, A.F. and W.M. Klein, Jr. 1993. The Vascular Flora of Pennsylvania. American Philosophical Society, Philadelphia, Pennsylvania. Rhoads, A.F. and T.A. Block.
  • 2007. The Plants of Pennsylvania: An Illustrated Manual. 2nd edition. University of Pennsylvania Press, Philadelphia, Pennsylvania.
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