Bear's Breeches
Acanthus mollis
Bianca
About this plant
Acanthus mollis, commonly called Bear's Breeches, is a large, leafy perennial known for its bold, deeply lobed leaves and tall spikes of white to pale purple flowers. It is often grown for its dramatic foliage and architectural form in gardens. Historically, its leaf shape inspired classical architectural designs called acanthus leaves.
Taxonomy
- Genus
- Acanthus
- Family
- Acanthaceae
- Higher classification
- Lamiales
- Plant type
- Perennial
- Lifespan
- Perennial
Origin & Distribution
- Native region
- Mediterranean
- Distribution
- Native to the Mediterranean region, it is widely cultivated in temperate gardens worldwide.
Care
- Light preference
- Partial shade
- Suitable locations
- Outdoor, Balcony, Greenhouse
- Preferred window facing
- East-facing, Southeast-facing, South-facing
- Watering frequency
- Moderate
- Watering interval
- 5–10 days
- Humidity
- Normal
- Minimum
- -15 °C
- Maximum
- 35 °C
- Optimal
- 15-25 °C
- USDA hardiness zones
- 7-10
- Soil pH
- 6.0-7.5 (slightly acidic to neutral)
- Soil type
- well-draining loam, rich in organic matter
Watering. Water moderately, allowing the topsoil to dry out between waterings. Avoid waterlogging the roots to prevent rot.
Fertilizing. Feed with a balanced, slow-release fertilizer in early spring to support growth. Additional feeding during the growing season is usually not necessary.
Acanthus mollis is a tough and easy-to-grow perennial that prefers partial shade but can tolerate full sun if watered well. It likes well-draining soil and moderate watering, allowing the soil to dry out slightly between waterings. It rarely has serious problems and needs little maintenance besides occasional pruning to remove old leaves.
Propagation
- Propagation methods
- Division, Seeds
- Care difficulty
- Easy
Ornamental features
- Flowering
- Yes
- Flowering period
- summer
Large, glossy, deeply lobed leaves with tall flower spikes that have white to pale purple hooded flowers.
Toxicity & Safety
- Toxic to humans
- Non-toxic
- Toxic to pets
- Non-toxic
- Weed potential
- Low spread
Generally non-toxic but may cause mild skin irritation in sensitive individuals. Keep away from pets that might chew on leaves.
Allergy information
- Allergy risk
- Low
- Allergy triggers
- Skin contact
- Pollen level
- Low
Acanthus mollis may cause mild skin irritation in some people who touch its leaves. It produces little airborne pollen, so it is unlikely to cause hay fever. To reduce any risk, wear gloves when handling the plant and wash hands afterward.
Common problems
Too much water can cause root rot, while too little light may make the plant leggy. Occasionally, slugs or snails may eat the leaves.
Uses
Primarily grown as an ornamental plant for its striking foliage and flowers in gardens and landscapes.
Notes
Prune old or damaged leaves in late winter or early spring to encourage fresh growth. The plant can spread by underground rhizomes, so contain it if you want to control its size.