James Tea, Marsh Tea, Continental Tea, Hudson Bay tea, Swamp tea

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An evergreen shrub common to North America and is found as far south as Wisconsin and Pennsylvania. They are low ornamental plants from 1–6 ft. high, having narrow, dark leaves lined underneath with rust-colored wooly hairs and bearing white, bell-shaped flowers in the early spring....

For severe symptoms, danger signs, pregnancy, child illness, or sudden worsening, seek urgent medical care.

বাংলা রোগী নোট এখনো যোগ করা হয়নি। পোস্ট এডিটরে “RX Bangla Patient Mode” বক্স থেকে সহজ বাংলা সারাংশ যোগ করুন।

এই তথ্য শিক্ষা ও সচেতনতার জন্য। এটি ডাক্তারি পরীক্ষা, রোগ নির্ণয় বা প্রেসক্রিপশনের বিকল্প নয়।

Article Summary

An evergreen shrub common to North America and is found as far south as Wisconsin and Pennsylvania. They are low ornamental plants from 1–6 ft. high, having narrow, dark leaves lined underneath with rust-colored wooly hairs and bearing white, bell-shaped flowers in the early spring. During the American Revolution, the leaves are said to have been used as a substitute for commercial tea. It is...

Key Takeaways

  • This article explains Bog Labrador Tea Scientific Classification in simple medical language.
Educational health guideWritten for patient understanding and clinical awareness.
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Emergency safety firstUrgent warning signs are highlighted below.

Seek urgent medical care if you notice

These warning signs are general safety guidance. Local emergency numbers and clinical judgment should always come first.

  • Severe symptoms, breathing difficulty, fainting, confusion, or rapidly worsening illness.
  • New weakness, severe pain, high fever, or symptoms after a serious injury.
  • Any symptom that feels urgent, unusual, or unsafe for the patient.
1

Emergency now

Use emergency care for severe, sudden, rapidly worsening, or life-threatening symptoms.

2

See a doctor

Book a professional medical evaluation if symptoms persist, worsen, recur often, affect daily activities, or occur in a high-risk patient.

3

Learn safely

Use this article to understand possible causes, tests, treatment options, prevention, and questions to ask your clinician.

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Definition

An evergreen shrub common to North America and is found as far south as Wisconsin and Pennsylvania. They are low ornamental plants from 1–6 ft. high, having narrow, dark leaves lined underneath with rust-colored wooly hairs and bearing white, bell-shaped flowers in the early spring. During the American Revolution, the leaves are said to have been used as a substitute for commercial tea.

It is an erect and aromatic shrub which grows to the height of 1 meter with twigs densely covered with long and soft hairs. Leaves are narrow, leathery, about 2-5 cm long, evergreen and alternate. Leaves are dark green above with edges which curl under along the margins. White flowers in tight clusters bloom from May to July. Each flower has small five toothed sepal tube with five separate petals and 5-7 stamens. Fruit is a small and fuzzy capsule tipped with persistent style.

Flowers

Flowers are five parted. Corolla has five white or creamy white petals, slightly broader, ovate, joined together only near their bases. Corolla is dense with unicellular hairs. Usually there are 8 stamens with white filaments and very pale yellow anthers and single style with a blunt tip. Calyx is small with five short lobes and all densely hairy. Flowers are considered fragrant and open after new leaves form.

Seed

Fertilized flowers form a longer than wide seed capsule which is elongated on both ends and contains 50 small seeds. Capsule is on recurved stalk and when the capsule is dry it splits upward from the bottom and releases seeds to the wind. Flowers self-fertilize.

Facts About Bog Labrador Tea

Name Bog Labrador Tea
Scientific Name Rhododendron groenlandicum
Native Native to North America
Common/English Name James Tea, Wild Rosemary, Marsh Tea, Continental Tea, Indian tea, Hudson Bay tea, Swamp tea, Northern Canada Hudson’s Bay Tea, St. Jamestea, Woolly tea, Settler’s tea,Greenland Labrador tea, Tundra tea, The´du Labrador,the´veloute´, Bois de savane, Le´don a`feuilles larges
Name in Other Languages English: Labrador-tea, Bog Labrador tea, Common Labrador tea, Greenland Labrador tea, Labrador tea;
Swedish: Bredbladig skvattram;
French: Thé du Labrador,  Lédon du Groenland, Thé velouté
Plant Growth Habit Evergreen shrub
Plant Size 50 cm tall
Bark Smooth brown
Stem Erect to prostrate, 1-1/2 to 3 feet long
Leaf Alternate, simple, 20–60 millimetres long, 3–15 millimetres broad
Medicinal part The leaves
Flower White
Fruit shape & size Fuzzy capsule

Bog Labrador Tea Scientific Classification

Scientific Name: Rhododendron groenlandicum

Rank Scientific Name & (Common Name)
Kingdom Plantae (Plants)
Subkingdom Viridiplantae  (Green plants)
Infrakingdom Streptophyta  (Land plants)
Superdivision Embryophyta
Division Tracheophyta  (Vascular plants, tracheophytes)
Class Magnoliopsida
Order Ericales
Family Ericaceae  (Heaths, éricacées)
Genus Rhododendron L. (Azaleas, rhododendron)
Species Rhododendron groenlandicum (Oeder) Kron & Judd (Bog Labrador tea)
Synonyms
  • Ledum canadense Lodd.
  • Ledum groenlandicum Oeder
  • Ledum latifolium Jacq.
  • Ledum palustre Michx.
  • Ledum palustre subsp. groenlandicum (Oeder) Hulten
  • Ledum palustre var. latifolium (Jacq.) Hook.
  • Ledum palustre var. latifolium (Jacq.) Michx.

 

Health Benefits of Bog Labrador Tea

  1. Respiratory health

Bog Labrador Tea is helpful for treating respiratory conditions such as coughs, bronchitis, flu cold and congestion. Sore throats are common symptoms of types infections and infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।" data-rx-term="inflammation" data-rx-definition="Inflammation is the body’s response to injury, infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।">inflammation, pain, or swelling. সহজ বাংলা: প্রদাহ/ফোলা/ব্যথা কমায়।" data-rx-term="anti-inflammatory" data-rx-definition="Anti-inflammatory means reducing inflammation, pain, or swelling. সহজ বাংলা: প্রদাহ/ফোলা/ব্যথা কমায়।">anti-inflammatory properties found in Bog Labrador Tea neutralize or eliminate that discomfort.

  1. Kidney health

Labrador tea is used for treating kidney disorders and detoxifies body as it has mild diuretic properties and flush system when overloaded with toxins. It helps to slow down growth of kidney stones and lowers infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।" data-rx-term="inflammation" data-rx-definition="Inflammation is the body’s response to injury, infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।">inflammation in that organ.

  1. Digestive system

Labrador tea is useful for indigestion and upset stomachs. When consumed in excess can cause upset stomach. This tea has active ingredients such as sesquiterpenes and tannins which provides calming effect on bloating, cramping, constipation and diarrhea.

  1. Skin health

The diluted or weak form of tea is recommended for drinking. The strong pot of this tea is beneficial for skin health. The antioxidant and astringent properties is present in this tea so when applied topically, it is effective for psoriasis, eczema, irritation, leprosy and infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।" data-rx-term="inflammation" data-rx-definition="Inflammation is the body’s response to injury, infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।">inflammation.

  1. Immune Health

Bog Labrador Tea has moderate amounts of Vitamin C which stimulates immune system and ensures that body has adequate white blood cells for protecting the body. Vitamin C is an antioxidant which eliminates free radicals that causes oxidative stress, chronic disease and infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।" data-rx-term="inflammation" data-rx-definition="Inflammation is the body’s response to injury, infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।">inflammation.

  1. Cancer prevention

Research is conducted to find out the effectiveness of Labrador tea on cancerous cells. Research has found antioxidant composition of this tea with anti-mutagenic and anti-carcinogenic effects which makes it excellent preventative measure when consumed in adequate amounts.

Habitat

It is disclosed from Greenland and from every province and territory in Canada and in the northeastern and northwestern United States (New York, New England, Michigan, Pennsylvania, Idaho, Minnesota, Wisconsin, Alaska, Oregon and Washington). It grows in bogs, open tundra, musklegs and occasionally on wet shores and rocky alpine slopes.

Uses

Very useful in coughs, colds, bronchial and pulmonary affections. Sometimes used as a table tea. For internal use the infusion of 1 teaspoonful of dried leaves to 1 cup of boiling water in wine glassful doses as needed for the control of the above mentioned.

Externally

A strong decoction has been recommended for external use as a remedy for itching and exanthematous (eruptions accompanied by fever) skin diseases.

Homoeopathic Clinical

Tincture of dried small twigs and leaves collected after flowering begins; tincture of whole fresh plant—Ascites, Asthma, Bites, Black eye, Boils, Bruises, Deafness, Ear (infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।" data-rx-term="inflammation" data-rx-definition="Inflammation is the body’s response to injury, infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।">inflammation of), Eczema, allergy, infection, or inflammation. সহজ বাংলা: চামড়া লাল হয়ে যাওয়া।" data-rx-term="erythema" data-rx-definition="Erythema means skin redness, often from irritation, allergy, infection, or inflammation. সহজ বাংলা: চামড়া লাল হয়ে যাওয়া।">Erythema nodosum, Face (pimples on), Feet (pains in, tender), Gout, Haemoptysis, Hands (pains in), Intoxication, Joints (affections of, cracking in Menier’s disease), Pediculosis, Prickly heat, Punctured wounds, Rheumatism, Skin (eruption on), Stings, Tetanus, Tinnitus, Tuberculosis, Varicella, Whitlow, Wounds.

Russian Experience

The common Russian name is Bogulnik but literature gives it another, Herba Ledu, which is very close to Canadian Ledum palustra, or Ledum marshland. Bogulnik sometimes covers miles of marshland in European Russia, Siberia and the Far East, making it impossible for other plants to invade this strong shrub abode.

The young leaves and twigs are collected in August and September. Care must be observed when drying as one of the various volatile ether oils it contains is 7½ per cent Ledum; the strong aroma from which could seriously affect the heart if one is in too close confinement during this plant drying stage.

Folk Medicine

Medical literature gives full credit to Folk Medicine though it is not fully experimented clinically. Leaves and twigs are officially collected for state institutes and sold to pharmacies and dispensaries.

Uses

Accommodates Coughs, Bronchitis, Bronchial asthma, Tubercular lungs, Stomach sickness, pain in the head or upper neck. সহজ বাংলা: মাথাব্যথা।" data-rx-term="headache" data-rx-definition="Headache means pain in the head or upper neck. সহজ বাংলা: মাথাব্যথা।">Headache, Kidney and weak Bladder, Rickets, Diarrhoea, Rheumatism (internally, and as a liniment or ointment), Pains in the chest, Scrofula, Scaby dandruff (blanketed on the scalp, or in patches). Additional: fertility, infections, tightness of breath. Can cure Bronchitis in two weeks. Recommended as a tea decoction of 1 oz. tea to 2 pints boiling water; drink as required, a mouthful at a time.

Externally

Russian Homoeopaths boil the flowers in fresh butter making an ointment for skin diseases, bruises, wounds, bleeding and rheumatism.

Culinary uses

  • Leaves and flowers are used to prepare herbal teas.
  • Fresh leaves are chewed.
  • Use the leaves as a seasoning for fish and meats.

Traditional uses

  • It is used to strengthen stomach, relieve head and promote perspiration.
  • Apply it externally to contusions, gangrenes and excoriations.
  • Leaves are used for treating rheumatism, asthma and burns.
  • Drink it as tea or juice for treating stomach flu, diarrhea, bad breath, chills, difficulty urinating and pneumonia.
  • Denyaave of Alaska use leaves tea for upset stomach, ease pain, swelling, stiffness, or reduced movement. সহজ বাংলা: জয়েন্টের প্রদাহ।" data-rx-term="arthritis" data-rx-definition="Arthritis means joint inflammation causing pain, swelling, stiffness, or reduced movement. সহজ বাংলা: জয়েন্টের প্রদাহ।">arthritis pain and ease heartburn.
  • Flower tea is used to combat cold.
  • Cooled tea is used as a wash for skin problems and gargle for sore throats.
  • Use it externally for treating various skin problems.
  • It is externally used as a wash for burns, itches, ulcers, stings, chapped skin and dandruff.
  • The ointment made from powdered leaves or roots are used for treating cracked nipples, ulcers, scalds and burns.

Precautions

  • Frequent intake may cause diuretic effect, intestinal ailment, vomiting, dizziness, drowsiness and exhaustion.
  • Pregnant women should avoid it as it may lead to abortion.

How to make Labrador tea

  • Take one to two teaspoonful Labrador tea leaves in a teapot.
  • Pour 2-3 cups of boiling water over the leaves.
  • Steep for five minutes.
  • Strain the mixture to remove the leaves.
  • Add flavor with lemon, sugar, or honey

 


References


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A simple rural-patient checklist to help you explain symptoms clearly, ask better questions, and avoid unsafe self-treatment.

Safety note: This is not a prescription or diagnosis. For severe symptoms, pregnancy danger signs, children with serious illness, chest pain, breathing difficulty, stroke-like weakness, or major injury, seek urgent care.

Which doctor may help?

Start with a registered doctor or the nearest qualified health center.

What to tell the doctor

  • Write when the problem started and how it changed.
  • Bring old prescriptions, investigation reports, and current medicines.
  • Write allergies, pregnancy status, diabetes, kidney/liver disease, and major past illnesses.
  • Bring one family member if the patient is weak, elderly, confused, or a child.

Questions to ask

  • What is the most likely cause of my symptoms?
  • Which danger signs mean I should go to hospital quickly?
  • Which tests are necessary now, and which can wait?
  • How should I take medicines safely and what side effects should I watch for?
  • When should I come for follow-up?

Tests to discuss

  • Vital signs: temperature, pulse, blood pressure, oxygen saturation
  • Basic physical examination by a clinician
  • CBC, urine test, blood sugar, or imaging only when clinically needed

Avoid these mistakes

  • Do not use antibiotics, steroid tablets/injections, or strong painkillers without proper medical advice.
  • Do not hide pregnancy, kidney disease, ulcer, allergy, or blood thinner use.
  • Do not delay emergency care when danger signs are present.

Medicine safety and first-aid guide

This section is for patient education only. It does not replace a doctor, pharmacist, or emergency care.

Safe first steps

  • Avoid heavy lifting, sudden bending, and prolonged bed rest.
  • Use comfortable posture and gentle movement as tolerated.
  • Discuss physiotherapy, X-ray, or MRI only when clinically needed.

OTC medicine safety

  • For mild back pain, pain-relief medicine may be discussed with a doctor or pharmacist.
  • Avoid repeated painkiller use if you have kidney disease, stomach ulcer, uncontrolled blood pressure, or are taking blood thinners.

Avoid these mistakes

  • Do not start antibiotics without a proper medical decision.
  • Do not use steroid tablets or injections casually for quick relief.
  • Do not delay emergency care because of home remedies.

Get urgent help if

  • Back pain with leg weakness, numbness around private area, loss of urine/stool control, fever, cancer history, or major injury needs urgent care.
Medicine names, dose, and timing must be decided by a qualified clinician or pharmacist after checking age, pregnancy, allergy, other diseases, and current medicines.

For rural patients and family caregivers

Patient health record and symptom diary

Write your symptoms, medicines already taken, test results, and questions before visiting a doctor. This note stays on your device unless you print or copy it.

Doctor to discuss: Medicine doctor / pediatrician for children / qualified clinician
Tests to discuss with doctor
  • Temperature chart and hydration assessment
  • CBC with platelet count if fever persists or dengue/other infection is possible
  • Urine test, malaria/dengue tests, chest evaluation, or blood culture only when clinically indicated
Questions to ask
  • What is the most likely cause of my symptoms?
  • Which warning signs mean I should go to emergency care?
  • Which tests are really needed now?
  • Which medicines are safe for my age, pregnancy status, allergy, kidney/liver/stomach condition, and current medicines?
  • Do I need antibiotics, or is this more likely viral?

Emergency warning signs such as chest pain, severe breathing difficulty, sudden weakness, confusion, severe dehydration, major injury, or loss of bladder/bowel control need urgent medical care. Do not wait for online information.

Safe pathway to proper treatment

Care roadmap for: James Tea, Marsh Tea, Continental Tea, Hudson Bay tea, Swamp tea

Use this simple roadmap to understand the next safe steps. It is educational and does not replace examination by a doctor.

Go to emergency care if you notice:
  • Severe or rapidly worsening symptoms
  • Breathing difficulty, chest pain, fainting, confusion, severe weakness, major injury, or severe dehydration
Doctor / service to discuss: Qualified healthcare provider; specialist depends on symptoms and examination.
  1. Step 1

    Check danger signs first

    If danger signs are present, seek emergency care and do not wait for online information.

  2. Step 2

    Record the symptom story

    Write when symptoms started, severity, medicines already taken, allergies, pregnancy status, and test results.

  3. Step 3

    Visit a qualified clinician

    A doctor, nurse, or qualified healthcare provider can examine you and decide which tests or treatment are needed.

  4. Step 4

    Do only useful tests

    Do tests after clinical assessment. Avoid unnecessary tests, random antibiotics, or repeated medicines without diagnosis.

  5. Step 5

    Follow up and return early if worse

    If symptoms worsen, new warning signs appear, or treatment is not helping, return for review quickly.

Rural patient practical tips
  • Take a written symptom diary and all previous prescriptions/test reports.
  • Do not hide medicines already taken, even herbal or over-the-counter medicines.
  • Ask which warning signs mean urgent referral to hospital.

This roadmap is for education. A real diagnosis and treatment plan requires history, examination, and clinical judgment.

RX Patient Help

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Write your symptom story. A health professional or site editor can review it before any answer is prepared. This box is not for emergency care.

Emergency first: Severe chest pain, breathing trouble, unconsciousness, stroke signs, severe injury, heavy bleeding, or rapidly worsening symptoms need urgent local medical care now.

Frequently Asked Questions

Is this article a replacement for a doctor?

No. It is educational content only. Patients should consult a qualified clinician for diagnosis and treatment.

When should I seek urgent care?

Seek urgent care for severe symptoms, rapidly worsening condition, breathing difficulty, severe pain, neurological changes, or any emergency warning sign.

References

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