Contents
Description
Cotoneaster pannosus, also known as silverleaf cotoneaster, is a deciduous shrub that belongs to the Rosaceae family. It is native to China and has been widely planted in many parts of the world as an ornamental plant. The plant typically grows up to 1.5 meters tall and wide, and has an upright, spreading habit. The leaves are oval-shaped, and have a silvery-gray appearance on the underside. The plant blooms in late spring to early summer, producing small clusters of white to pinkish flowers. The flowers are followed by small, red berries that persist into winter.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Rosales |
| Family | Rosaceae |
| Genus | Cotoneaster |
| Species | Pannosus |
Appearance
The silverleaf cotoneaster is a small, deciduous shrub that can grow up to 1.5 meters tall and wide. It has an upright, spreading habit, and produces oval-shaped leaves that are dark green on the upper side and silvery-gray on the underside. The plant blooms in late spring to early summer, producing small clusters of white to pinkish flowers that are about 1 cm in diameter. The flowers are followed by small, red berries that persist into winter and are a favorite of birds. The bark of the plant is greenish-brown and smooth when young, but becomes rough and grayish-brown with age.
Care Guide
The silverleaf cotoneaster is a relatively low-maintenance plant, but it does require some care to thrive. Here are some tips on how to care for your cotoneaster:
- Water: Water your cotoneaster regularly, especially during dry spells. Avoid overwatering, as this can lead to root rot.
- Fertilization: Fertilize your cotoneaster in the spring with a balanced, slow-release fertilizer.
- Soil: Cotoneasters prefer well-draining soil that is slightly acidic. If your soil is heavy or clay-like, add some organic matter to improve drainage.
- Sunlight: Cotoneasters prefer full sun to light shade. They can tolerate some shade, but may not flower as well in these conditions.
- Hardiness Zones: The silverleaf cotoneaster is hardy in USDA zones 6-8.
Common Pests & Diseases
The silverleaf cotoneaster is generally resistant to pests and diseases, but there are a few issues to watch out for:
- Aphids: These small, soft-bodied insects can suck the sap from the leaves, causing them to curl and distort. They can be controlled with insecticidal soap or neem oil.
- Fire blight: This bacterial disease can cause the leaves and branches to turn black and die. There is no cure for fire blight, so infected branches should be pruned and destroyed.
- Leaf spot: This fungal disease causes brown spots on the leaves. It can be controlled with fungicides.
Habitat
The silverleaf cotoneaster is native to China, and is found in a variety of habitats, including forests, scrubland, and rocky areas. It has been widely planted as an ornamental plant in many parts of the world, and can be found in gardens, parks, and along roadsides.
Question and Answer
Q: How often should I water my silverleaf cotoneaster?
A: Water your cotoneaster regularly, especially during dry spells. Avoid overwatering, as this can lead to root rot.
Q: Can I grow a silverleaf cotoneaster in a container?
A: Yes, silverleaf cotoneasters can be grown in containers as long as they have well-draining soil and are watered regularly.
Q: When should I prune my silverleaf cotoneaster?
A: Prune your cotoneaster in late winter or early spring, before new growth appears. Remove any dead or diseased branches, as well as any crossing or rubbing branches.
Q: Will my silverleaf cotoneaster attract birds?
A: Yes, the red berries produced by silverleaf cotoneasters are a favorite of many bird species.
Related Plants
- Cotoneaster dammeri
- Cotoneaster horizontalis
- Cotoneaster lacteus
- Cotoneaster salicifolius
References
- “Cotoneaster pannosus.” Missouri Botanical Garden. Accessed August 4, 2021. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c982
- “Silverleaf Cotoneaster.” Royal Horticultural Society. Accessed August 4, 2021. https://www.rhs.org.uk/Plants/13202/i-Cotoneaster-pannosus-i/Details
- “Cotoneaster pannosus.” Plant Information Online. Accessed August 4, 2021. https://plantinfo.umn.edu/node/1439470
