About
Acanthus spinosus Ferguson's form is a compact, clump-forming perennial that reaches heights of up to 65 cm. It features a rosette of deeply divided, serrated, and spiny lance-shaped leaves that are dark green and arise from pointed buds. During the summer months, this plant produces short flower spikes adorned with numerous silvery-white blossoms, each partially enveloped by purple bracts. The foliage, stems, and flower spikes are all coated in fine, silky hairs.
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, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained, Well-drained
- Aspect
- East-facing, North-facing, South-facing, West-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H6
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming
- Foliage
- Deciduous
- Height
- 0.5-1 metres
- Spread
- 0.5-1 metres
- Time to full height
- 2-5 years
- Suggested uses
- Cottage and informal garden, Architectural, Mediterranean climate plants
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