Ledum (Ledum groenlandicum)
A rare northern herb oil, also known as Labrador tea, with a mellow, earthy aroma used in small amounts for grounding blends.
How to use it
2–3 drops for a calming, grounding note, blended with cedarwood or frankincense.
Dilute 1–2% in a carrier oil; patch-test on a small area before wider use.
Safety in detail
- Max dermal use
- Dilute in a carrier oil for skin
- Phototoxic
- No
- Use the Labrador tea species (Rhododendron/Ledum groenlandicum), not marsh Ledum palustre, which is higher in toxic ledol.
- Traditionally avoided during pregnancy; use conservatively.
- Not phototoxic. Keep out of reach of children.
Sources: Phytochemistry study (1993)
Composition & chemistry
- Limonene 25%
- Sabinene 12%
- Selin-11-en-4-α-ol 10%
- α-Pinene 8%
- β-Pinene 5%
- γ-Terpinene 4%
- Other minor constituents 36%
- Selin-11-en-4-α-ol — a characteristic sesquiterpene alcohol of Labrador tea oil, associated with its distinctive herbaceous-balsamic depth Phytochemistry study (1993)
Steam-distilled Labrador tea (Rhododendron groenlandicum, formerly Ledum groenlandicum); a monoterpene- and sesquiterpene-alcohol oil. Distinct from the toxic-ledol-rich marsh Ledum palustre.
Source: Phytochemistry study on the essential oil of Ledum groenlandicum (1993)Also known as Labrador tea, from the traditional brew made from its leaves in the north.
What the research says
An honest read of the published research — what has actually been studied, at what stage. Not medical advice or a promise of results.
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Ledum (Labrador tea) oil has been characterised chemically and studied for antioxidant activity. Its traditional 'cleansing'/liver-support reputation is preliminary and not clinically established.
Phytochemistry study (1993)
Evidence & sources
Peer-reviewed research on Ledum's chemistry and safety. These describe composition and documented effects — not health or treatment claims.
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Labrador tea oil is a limonene- and sesquiterpene-alcohol-rich oil, chemically distinct from the toxic marsh Ledum palustre.
Phytochemistry study (1993)
Frequently asked questions
Is ledum safe?
The Labrador tea species (Rhododendron/Ledum groenlandicum) is the one used aromatically; avoid the marsh species Ledum palustre, which is higher in toxic ledol. Use conservatively and avoid it during pregnancy. Phytochemistry study (1993)
What is ledum used for?
Also called Labrador tea, it has a herbaceous, slightly balsamic aroma and a traditional reputation for 'cleansing' and relaxation. These uses are traditional and preliminary rather than proven. Phytochemistry study (1993)
Is ledum phototoxic?
No — ledum isn't phototoxic, so there's no sun-exposure restriction. Dilute it for topical use as usual.
Gallery
Ledum (Ledum groenlandicum), commonly known as Labrador tea, is steam-distilled from a low, wiry shrub native to the boggy, acidic soils of northern Canada and Scandinavia — terrain few other aromatic plants tolerate. Indigenous peoples across its native range have long brewed the leaves into a traditional tea, which is where the common name comes from, though the essential oil is a separate, far more concentrated product from the tea itself.
Aroma character
Mellow, slightly sweet, and herbaceous-earthy, with none of the bright sharpness of mint or citrus oils — an aroma that reads as grounding and understated rather than attention-getting, which is part of why it shows up in blends aimed at winding down.
In the diffuser
2–3 drops is enough for a calming, grounding background note, often blended with cedarwood, frankincense, or other resinous oils for an earthy, low-key evening atmosphere.
On skin
Dilute to 1–2% in a carrier oil. As with any less-common oil, patch-test on a small area of skin before wider use, since fewer people have reported experience with ledum than with mainstream oils.
What pairs well
Its earthy, herbaceous profile complements cedarwood, vetiver, patchouli, and other grounding base notes well.
Sourcing note
Ledum is a genuinely low-volume, specialty oil — supply from wild-harvested or small-scale cultivated Labrador tea is limited compared to farmed oils like lavender or peppermint, which is reflected in both its price and its relative rarity on store shelves.
Found in these blends
Ledum is one of the oils inside 1 Young Living blend.