Contents
Description
Cotinus coggygria, commonly known as smoke tree or smoke bush, is a deciduous shrub or small tree that belongs to the Anacardiaceae family. It is native to Southern Europe, Central Asia, and the Himalayas. The plant is known for its attractive foliage and unique inflorescence that resembles a puff of smoke.
Taxonomic Information
| Domain | Eukarya |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Angiospermae |
| Order | Sapindales |
| Family | Anacardiaceae |
| Genus | Cotinus |
Appearance
The leaves of Cotinus coggygria are oval-shaped, 2-4 inches long, and have a blue-green or purple color. The inflorescence of the plant consists of numerous small flowers that grow in clusters and are surrounded by hairs that give the appearance of smoke. The flowers are usually pink, but they can also be white or purple.
Care Guide
Cotinus coggygria is a relatively low-maintenance plant that can thrive in a variety of conditions. Here are some tips for caring for this plant:
- Water: The plant prefers moist soil but can tolerate periods of drought once established.
- Fertilization: Cotinus coggygria does not require regular fertilization, but you can apply a slow-release fertilizer in the spring to encourage growth.
- Soil: The plant prefers well-draining soil that is rich in organic matter.
- Sunlight: Cotinus coggygria prefers full sun but can tolerate partial shade.
- Hardiness Zones: The plant can grow in hardiness zones 4-9.
Common Pests & Diseases
Cotinus coggygria is relatively resistant to pests and diseases, but it can still be affected by a few common issues:
- Verticillium Wilt: This fungal disease can cause wilting, yellowing, and eventual death of the plant. It is best to remove infected plants and avoid planting new ones in the same area.
- Aphids: These small insects can suck the sap from the plant and cause stunted growth. They can be controlled with insecticidal soap or neem oil.
- Caterpillars: The larvae of certain moths can feed on the leaves of the plant and cause defoliation. They can be controlled with Bacillus thuringiensis.
Habitat
Cotinus coggygria is native to Southern Europe, Central Asia, and the Himalayas. It can grow in a variety of habitats, including rocky slopes, open woodlands, and scrublands. The plant has also been introduced to North America and is now commonly grown as an ornamental plant.
Question and Answer
Q: How tall can Cotinus coggygria grow?
A: Cotinus coggygria can grow up to 15-20 feet tall, but it can also be pruned to maintain a smaller size.
Q: Can Cotinus coggygria grow in containers?
A: Yes, Cotinus coggygria can grow in containers as long as the container is large enough to accommodate the root system and the soil is well-draining.
Q: When should I prune Cotinus coggygria?
A: Cotinus coggygria can be pruned in the late winter or early spring before new growth emerges. Pruning can help maintain the shape of the plant and encourage new growth.
Q: Can I propagate Cotinus coggygria from cuttings?
A: Yes, Cotinus coggygria can be propagated from hardwood cuttings taken in the winter or early spring. The cuttings should be dipped in rooting hormone and planted in well-draining soil.
Related Plants
- Cotinus obovatus
- Cotinus sphaerocarpa
- Cotinus coggygria ‘Royal Purple’
- Cotinus coggygria ‘Golden Spirit’
References
- “Cotinus coggygria.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=d326.
- “Smokebush.” Fine Gardening, www.finegardening.com/plant/smokebush-cotinus-coggygria.
- “Cotinus coggygria (Smoke Tree).” Garden Design, www.gardendesign.com/plants/cotinus-coggygria.html.
