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Safety Overview
1.American Elm — Essential Profile
The American Elm, scientifically classified as Ulmus americana, is a distinguished deciduous tree native to the vast landscapes of eastern North America. Belonging to the Ulmaceae family, this species historically graced floodplains, riverbanks, and nutrient-rich woodlands from Cape Breton Island, Nova Scotia, west to southern Manitoba, and south to central Florida and Texas. Renowned for its majestic stature, American Elm trees can typically reach impressive heights of 30-40 meters (100-130 feet) with trunk diameters often exceeding 1.2 meters (4 feet).
Its deeply furrowed, dark gray bark provides a textured contrast to its vibrant green, doubly serrated leaves that transform into a striking yellow hue in autumn. The tree’s characteristic vase-like crown, spreading gracefully upwards, once earned it the epithet 'Queen of the American urban forest,' providing significant aesthetic value, shade, and vital habitat for diverse wildlife. Despite its adaptability to various soil types, including well-drained loams and poorly drained clays, and its resilience across diverse climate zones from warm humid south to cold dry north, the species faced a catastrophic decline in the 20th century due to Dutch Elm Disease.
However, ongoing breeding efforts aim to restore this ecologically and culturally significant species.
Trusted Scientific References
Authoritative external sources for Ulmus americana:
American Elm should be interpreted through verified botanical identity, practical care, and responsible safety language. This recovery note adds the missing context needed for a complete profile: match light to the plant's habit, use well-drained soil, water according to season, and avoid unsupported medicinal or edible claims. For publishing, the plant can be presented as a source-backed medicinal plant with clear care guidance, common problem diagnosis, and conservative safety wording.
1.1.American Elm — Highlights
- ✓Majestic Deciduous Tree — Majestic Deciduous Tree
- ✓Vase — shaped Crown Morphology
- ✓Native to Eastern — Native to Eastern North America
- ✓Inner Bark as — Inner Bark as Primary Medicinal Part
- ✓Rich in Soothing — Rich in Soothing Mucilage Content
- ✓Traditional Demulcent Remedy — Traditional Demulcent Remedy
- ✓Supports Gastrointestinal Health — Supports Gastrointestinal Health
- ✓Promotes Skin Healing — Promotes Skin Healing and Repair
- ✓Vulnerable to Dutch — Vulnerable to Dutch Elm Disease
- ✓Ecologically Significant Species — Ecologically Significant Species
1.2.American Elm — Concise Overview
- ✓Deciduous tree native to Eastern North America, known for its majestic vase-like crown.
- ✓Inner bark traditionally used for its demulcent, anti-inflammatory, and wound-healing properties.
- ✓Rich in soothing mucilage, along with tannins and flavonoids, providing protective and antioxidant effects.
- ✓Historically significant for Indigenous peoples and early settlers for both medicinal and nutritive purposes.
- ✓Susceptible to Dutch Elm Disease but exhibits remarkable resilience and adaptability in diverse habitats.
- ✓Requires careful sourcing and proper hydration when consumed; avoid concurrent use with other medications.
2.American Elm — Scientific Identity
3.American Elm — Categories & Tags
4.American Elm — Botanical Description
5.American Elm — Heritage Uses
6.American Elm — Key Phytochemicals
- ✓Mucilage — Primarily composed of polysaccharides such as galacturonic acid, rhamnose, and galactose, responsible for the bark’s renowned demulcent and soothing properties.
- ✓Tannins — Astringent polyphenolic compounds that contribute to its wound-healing and anti-inflammatory effects by tightening tissues and reducing exudation.
- ✓Flavonoids — Antioxidant compounds, including derivatives of quercetin and kaempferol, which provide cellular protection against oxidative stress and possess anti-inflammatory actions.
- ✓Phytosterols — Plant sterols like beta-sitosterol, known for their anti-inflammatory and potential immune-modulating benefits within the body.
- ✓Saponins — Present in lower concentrations, these compounds may contribute to expectorant actions and offer mild anti-inflammatory properties.
- ✓Triterpenes — A diverse group of compounds with observed anti-inflammatory, adaptogenic, and protective effects on cellular health.
- ✓Phenolic Acids — Antioxidants such as caffeic acid and ferulic acid, which enhance the plant's overall protective qualities against free radical damage.
- ✓Minerals — Contains various essential trace minerals and electrolytes, supporting its historical use as a nutritive agent during times of scarcity.
- ✓Gums — Similar to mucilage, these provide a protective and lubricating layer when hydrated, enhancing the soothing effect.
7.American Elm — Scientific Evidence
- ✓Demulcent Properties — The inner bark is rich in mucilage, forming a soothing, protective layer over irritated mucous membranes throughout the body.
- ✓Gastrointestinal Support — Alleviates conditions such as gastritis, peptic ulcers, and irritable bowel syndrome by coating and calming the digestive tract lining.
- ✓Anti-inflammatory Action — Reduces inflammation in both internal and external tissues, aiding in the recovery from various irritations and minor injuries.
- ✓Wound Healing — When applied topically as a poultice, its mucilage helps to draw out impurities from minor wounds, boils, and abscesses, promoting tissue regeneration.
- ✓Skin Irritation Relief — Effective in soothing skin conditions like rashes, minor burns, and insect bites due to its emollient and protective qualities.
- ✓Respiratory System Aid — Helps to calm persistent coughs, sore throats, and bronchitis by moistening and soothing inflamed airways.
- ✓Urinary Tract Support — May assist in alleviating irritation and discomfort within the urinary tract and bladder, promoting a soothing effect.
- ✓Nutritional Supplement — Historically utilized as a famine food, the inner bark provides complex carbohydrates and trace minerals, offering some nutritive value.
- ✓Detoxification Support — Traditional applications suggest its use in poultices to help draw out toxins and reduce swelling from localized infections.
- ✓Immune System Modulation — Some traditional wisdom points to its role in generally supporting immune function, particularly during periods of illness.
7.1.American Elm — Reported Uses
8.American Elm — Cautions & Contraindications
8.1.American Elm — Reported Side Effects
- ✓Gastrointestinal Discomfort — High doses may cause mild bloating, gas, or constipation due to its significant fiber and mucilage content.
- ✓Medication Absorption Interference — The mucilaginous properties can coat the digestive tract, potentially delaying or reducing the absorption of other oral medications.
- ✓Allergic Reactions — Rare instances of skin rash, itching, or respiratory symptoms may occur in individuals sensitive to Ulmus species.
- ✓Choking Hazard — If not adequately hydrated, powdered bark can swell rapidly, posing a choking risk; always mix thoroughly with sufficient liquid.
- ✓Contamination Risk — Wild-harvested bark may carry risks of contamination from environmental pollutants or misidentification with non-medicinal barks.
- ✓Diarrhea — Paradoxically, very high doses or individual sensitivity might lead to loose stools in some cases, requiring dose adjustment.
8.2.American Elm — Safety Profile
- ✓Pregnancy and Lactation — Insufficient scientific research exists; use with caution or avoid during pregnancy and breastfeeding, consulting a healthcare professional.
- ✓Drug Interactions — Administer American Elm preparations at least 1-2 hours apart from other oral medications to prevent potential interference with absorption.
- ✓Children — Generally considered safe for children in appropriate, reduced doses, but professional guidance is recommended.
- ✓Underlying Health Conditions — Individuals with severe or chronic gastrointestinal conditions should consult a doctor before incorporating American Elm into their regimen.
- ✓Quality Sourcing — Ensure the inner bark is sourced from sustainably harvested, disease-free trees, preferably from reputable suppliers to ensure purity and efficacy.
- ✓Hydration — Always consume American Elm preparations with ample water or fluid to ensure proper mucilage expansion and prevent potential choking.
- ✓Topical Use — Generally safe for external application, but a patch test is advisable for individuals with sensitive skin to check for reactions.
9.American Elm — Usage Guide
- ✓Decoction (Internal) — Prepare by simmering 1-2 teaspoons of dried inner bark powder in 250ml of water for 15-20 minutes, then strain; consume for digestive or respiratory ailments.
- ✓Poultice (External) — Mix finely powdered inner bark with warm water to create a thick paste; apply directly to boils, wounds, or inflamed skin, covering with a clean cloth.
- ✓Infusion (Internal) — Steep 1 tablespoon of powdered inner bark in hot water for 10-15 minutes for a soothing drink, particularly beneficial for sore throats or coughs.
- ✓Gruel/Porridge (Internal) — Historically, powdered inner bark was mixed with water or milk to form a nutritive gruel, used for sustenance and gentle digestive support.
- ✓Compress (External) — Soak a clean cloth in a strong, cooled decoction of the bark and apply to affected skin areas for extended relief from irritation.
- ✓Capsules/Tablets (Internal) — Commercially available forms provide a convenient and standardized method for internal consumption of the powdered bark.
- ✓Tincture (Internal/External) — An alcoholic extract of the inner bark, used in small doses internally or diluted for topical applications.
10.American Elm — Cultivation & Care
- ✓Site Selection — Prefers full sun to partial shade, thriving in open areas or forest edges with ample light for robust growth.
- ✓Soil Requirements — Adaptable to a wide range of soil types, but performs best in rich, well-drained loams with a slightly acidic to mildly alkaline pH (5.5-8.0).
- ✓Moisture Levels — Requires consistent moisture, especially during establishment; tolerates temporary flooding but not prolonged waterlogging during the growing season.
- ✓Propagation — Primarily propagated from seeds, which germinate readily after natural stratification; can also be grown from cuttings or grafting for specific cultivars.
- ✓Planting — Plant seedlings in spring or fall, ensuring adequate spacing to accommodate the mature tree's large crown and root system.
- ✓Maintenance — Requires regular watering during dry periods, mulching to conserve soil moisture, and structural pruning to maintain health and form.
- ✓Disease Management — Essential to select disease-resistant cultivars or implement proactive measures to protect against Dutch Elm Disease in susceptible areas.
Reviewed by the Flora Medical Global Botanical Review Panel
Multi-disciplinary editorial group · Botany · Ethnobotany · Herbal-medicine literature
Who reviewed this: This page was checked by the Flora Medical Global Botanical Review Panel — an in-house editorial group of botany graduates, ethnobotany researchers, and horticulture practitioners who collectively maintain our 7,000+ plant encyclopedia. Meet the team.
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Scientific names and synonyms cross-checked against Kew POWO, World Flora Online, and The Plant List.
2. Phytochemical & medicinal cross-reference
Active compounds, traditional uses, and reported activities are cross-referenced with PubMed, USDA Dr. Duke's database, and peer-reviewed ethnobotanical literature.
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Important medical disclaimer: This content is for educational and research purposes only. It is not medical advice and is not a substitute for consultation with a licensed healthcare provider. Do not use any herb to self-treat a medical condition without professional guidance.
Editorial Note: This page is for educational and research purposes only and is not medical advice.
Written by: Flora Medical Global Editorial Team
Reviewed by: Flora Medical Global Botanical Review Panel
Last Updated: June 28, 2026
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