Slippery elm
Ulmus rubra
Botanical family: Ulmaceae
A North American tree whose inner bark ('slippery elm'), rich in mucilage, has long been used by indigenous peoples and herbalism.
Sun to partial shade
Cool, rich, deep
Moderate: prefers moist, rich soils but copes with drier sites
Very hardy
Overwinters in your zone
Role in permaculture
Possible in a hedge or forest garden, for its medicinal inner bark, bearing in mind its sensitivity to Dutch elm disease.
Companions
No companion planting is documented for this plant: no recommended neighbour, no neighbour to avoid.
Seasons & availability
Inner bark taken in spring, from cultivated trees.
Available: April, May.
Guidance for the oceanic / temperate climate; it may vary with your region, altitude, exposure and growing method.
Nutritional & medicinal properties
For educational purposes. Not a substitute for medical advice. Effects depend on the form, the dose and personal context.
Precautions & contraindications
The mucilage can slow the absorption of other medicines (space out the doses); cautious use during pregnancy; limited clinical data.
Species & varieties
The best-known species and varieties in France.
Species
Key takeaways
- • Prefers sun to partial shade exposure.
- • Ideal soil: cool, rich, deep.