About
Acanthus spinosus L. is a robust herbaceous perennial that can reach heights of up to 1.2 meters. It features large, deeply lobed leaves that are dark green and have spiny tips. In late spring and summer, this plant produces upright flower spikes adorned with white blooms and spiny purple bracts.
About the genus
Acanthus consists of sturdy herbaceous perennials characterized by their lobed leaves and upright flower spikes featuring two-lipped blooms accompanied by vibrant bracts.
Growing conditions
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing, North-facing, West-facing, East-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H6
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Columnar upright
- Foliage
- Deciduous
- Height
- 1-1.5 metres
- Spread
- 0.5-1 metres
- Time to full height
- 2-5 years
- Suggested uses
- Cottage and informal garden, Mediterranean climate plants, Architectural
- Native to
- Mediterranean
Care notes
- Cultivation
- Grow in sun or part shade, will tolerate most soils but thrives in deep loam. Acanthus need careful positioning as they can be difficult to remove once established. Has the potential to become a nuisance if not managed well
- Pruning
- Cut down old flower stems
- Propagation
- Propagate by division or by root cuttings
- Pest resistance
- Generally pest-free
- Disease resistance
- May be susceptible to powdery mildews