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Acanthus spinosus


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  • Common Name: Armed Bear's Breech, Spiny Bear's Breech
  • Synonyms: Acanthus caroli-alexandri
  • Position: Full sun, Partial shade, North-facing, East-facing, South-facing, West-facing, Exposed, Sheltered
  • Soil: Well-drained, Chalk, Loam, Sand, Acid, Alkaline, Neutral
  • Flowers: Spring, Summer
  • Flower Colour: Purple, White
  • Hardiness: H6 - Hardy in all of UK and northern Europe
  • Habit: Deciduous, Columnar, Upright
  • Height & Spread: 150cm × 90cm
Handsome herbaceous perennial of upright habit with deeply lobed, spine-tipped, glossy, dark green foliage and from late spring throughout summer bearing erect spikes of white flowers with purple bracts. A wonderful architectural plant.
Acanthus spinosus L. RHS Chelsea Flower Show


Water well during dry spells to minimise the risk of powdery mildew developing. Larger clumps can be lifted and divided in autumn or spring.