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Photo: Hectonichus, CC BY-SA 3.0 (via Wikimedia Commons)

Bear's Breeches

Acanthus mollis

Also known as Bear's Breech, Sea Dock, Brank Ursine, Acanthus

At a glance
Family
Acanthaceae
Type
Herbaceous perennial
Parts used
Leaves, roots
Size
3 to 4 feet tall and wide, with flower spikes rising to 5 feet or more
Bloom
Late spring into midsummer, tall spires of purple-hooded white flowers
Habitat
Mediterranean woodland edges and rocky slopes, widely naturalized in mild-climate gardens worldwide
Acquisition
Grow
This plant in HerbSense

Key benefits

Soothing traditional poultice
Old-world wound care
Dramatic architectural foliage
Draws bees and pollinators

Traditional uses

Long before it became a garden favorite, bear's breeches was a working plant in Mediterranean folk medicine. Villagers crushed the broad, glossy leaves into a soft mash and bound them over bruises, sprains, and stubborn wounds, trusting the leaf's cool, mucilaginous texture to calm angry skin. The root, more astringent than the leaf, was sometimes simmered into a wash used the same way. Its greater legacy, though, is artistic rather than medicinal: the scalloped leaf shape became the template for the Corinthian column capital, carved into temples and buildings for over two thousand years.

How to grow & use it

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Pairs well with
  • Plantain
  • Comfrey
  • Calendula
Substitutes
  • Comfrey leaf
  • Marshmallow leaf
Choose it when

For the gardener who wants the drama of an ancient temple frieze in living leaf form, and a soft green poultice on hand for the everyday bumps and bruises of garden life.

Did you know?

According to the Roman architect Vitruvius, the Corinthian capital was born when the sculptor Callimachus spotted an acanthus plant growing up through a basket left on a young girl's grave, its leaves curling gracefully around the woven sides, and carved the design into stone ever after.

Safety

Acanthus mollis is not documented as a seriously toxic plant, but it has not been well studied by modern science, and its safety for internal use has not been established, so it is traditionally applied to the skin rather than taken by mouth. The leaves and sap can occasionally irritate sensitive skin, so a small patch test is wise before broader use, and the plant should be kept away from open wounds if any reaction appears. Because safety data is lacking, it is best avoided during pregnancy and breastfeeding. As with any traditional herbal preparation, it is worth talking with a qualified healthcare provider before use, especially for children, those who are pregnant or nursing, or anyone managing an ongoing health condition.