Plant Wiki

The open plant encyclopedia

Know any plant.
Grow it well.

Snap a photo or search by any name to see how to care for it, where it comes from, whether it's safe, and a 3D model you can turn.

  • 13,000+plants with full pages
  • 365,000+plant species worldwide
  • 220+countries covered

Common in

See all

The plants people record most in your country, and ones that grow there wild.

What do you want to do?

Popular plants

Browse all plants

See them in 3D

All plants in 3D

Browse plants

Filter by what you want to do, shape, origin, country, care and safety.

Plant Wiki › Browse plants

Spine acanthus

Acanthus spinosus

Also called Bear's breeches, Spiny Bear's Breech, Spiny Bear's Breeches

Spine acanthus
Photo: Magnus Manske, CC BY-SA 3.0

Spiny bear's breech is a hardy herbaceous perennial from southern Europe and western Turkey, grown for its spiny, deeply cut leaves and tall spikes of white flowers with maroon bracts. It thrives in sunny, well-drained conditions in a border.

Family
Acanthaceae (Acanthus family)
Grows as
Perennial
Light
Full sun, Part shade
Water
Water during dry spells in the first season, then largely leave it alone; it tolerates drought once established.
Soil
Well-drained, fertile soil; tolerates poor and chalky soils.
Temperature
Hardy to about -15 °C; cold-tolerant outdoors.
How easy
Easy
Native range
SE. Europe to S. Türkiye
Climate
temperate

About

Acanthus spinosus, the spiny bear's breech, is a species of flowering plant in the family Acanthaceae, native to southern Europe, from Italy to western Turkey. It is an herbaceous perennial growing to 150 cm (59 in) tall by 60–90 cm (24–35 in) wide. The deeply cut leaves have spiny margins, and in early summer it bears erect, 1 m (3 ft) long racemes of white flowers with maroon bracts.

It is thought that both A. spinosus and close relative A. mollis were introduced to Britain from the Mediterranean by the Roman Empire. It has been intermittently cultivated ever since, and is now a regular feature of the herbaceous border. For centuries, stone or bronze stylized versions of acanthus leaves have appeared as decoration on certain styles of architecture and furniture.

Other Acanthus plants

Acanthus arboreus · Acanthus austromontanus · Acanthus carduaceus · Mountain Thistle · Acanthus dioscoridis · Acanthus · Acanthus eminens · Acanthus flexicaulis · Acanthus gaed · Acanthus guineensis · Syrian Acanthus · Hungarian Bear’s Breeches

Text excerpted from the Wikipedia article Acanthus spinosus by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

Credits & terms

Identify a plant

Point at a leaf or flower and snap. One plant in frame works best.

Your photo
Starting camera…