Rock Cotoneaster
Cotoneaster horizontalis
About this plant
Cotoneaster horizontalis, commonly known as Rock Cotoneaster, is a low-growing, spreading shrub with distinctive, fan-shaped branches that create a neat, lattice-like pattern. It has small, dark green leaves that turn red in autumn and produces small white flowers followed by bright red berries. This plant is often used as ground cover or for erosion control on slopes due to its dense growth and attractive appearance.
Taxonomy
- Genus
- Cotoneaster
- Family
- Rosaceae
- Plant type
- Shrub
Origin & Distribution
- Native region
- China, Tibet, Nepal
- Distribution
- Widely cultivated in temperate regions around the world as an ornamental shrub.
Care
- Light preference
- Full sun
- Suitable locations
- Outdoor, Balcony, Greenhouse
- Watering frequency
- Moderate
- Watering interval
- 7–14 days
- Humidity
- Normal
- Minimum
- -30 °C
- Maximum
- 35 °C
- Optimal
- 15-25 °C
- USDA hardiness zones
- 5-8
- Soil pH
- 6.0-7.5 (neutral to slightly acidic)
- Soil type
- well-draining loam, adaptable to various soils
Watering. Water regularly during dry periods, especially when newly planted. Once established, it is moderately drought tolerant.
Fertilizing. Feed with a balanced, slow-release fertilizer in early spring to support healthy growth and berry production.
Rock Cotoneaster is a hardy shrub that tolerates a range of soils and light conditions but prefers full sun for best berry production. It is relatively low-maintenance but can become overgrown if not pruned occasionally. Watch for scale insects and fire blight disease in some areas.
Propagation
- Propagation methods
- Cuttings, Seeds
- Care difficulty
- Easy
Ornamental features
- Flowering
- Yes
- Flowering period
- spring
Attractive fan-shaped branches, small white flowers in spring, bright red berries in autumn, and colorful fall foliage.
Toxicity & Safety
- Toxic to humans
- Non-toxic
- Toxic to pets
- Non-toxic
- Weed potential
- Low spread
Safe around children and pets; no known toxicity.
Common problems
Susceptible to fire blight, scale insects, and aphids if conditions are poor. Overwatering or poor drainage can lead to root rot.
Uses
Used as ground cover, in rock gardens, for erosion control on slopes, and as an ornamental shrub in landscapes.
Notes
Prune in late winter or early spring to maintain shape and remove any dead wood. It can tolerate pruning well and responds with fresh growth.