Also known as Byzantine Filbert · Clusternut · Constantinople Hazel
Corylus colurna, the Turkish Hazel, is a large, upright deciduous tree with attractive, corky bark and edible nuts. It offers excellent ornamental value.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun to Partial Shade
75% intensity
Prefers full sun for best growth and nut production, but tolerates light shade.
Consistent Moisture
50% intensity
Water when top 2-3 cm of soil is dry. Ensure good drainage.
Well-drained, loamy soil
50% intensity
Hardy
50% intensity
Tolerates a wide range of temperatures; hardy in USDA zones 4-8. Protect from extreme heat.
Moderate
50% intensity
Fertilize annually in spring with a balanced fertilizer. Avoid over-fertilization.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | Yes |
None
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Turkish Hazel prefers consistent moisture, especially when young. Water deeply when the top 2-3 cm of soil feels dry. Reduce watering in winter but do not let the soil dry out completely.
Overwatering can lead to root rot, so ensure good drainage.
Prune to shape the tree and remove dead, damaged, or crossing branches. This can be done in late winter or early spring before new growth begins.
For fruit production, thinning dense canopies can improve air circulation and nut development.
Propagation is typically done by seed, which requires stratification. Grafting is also an option for desired cultivars. Sow stratified seeds in spring in a well-draining mix.
Patience is key for successful germination and establishment.
Young trees may need repotting every 2-3 years to replenish soil and provide more space for root growth. Use a well-draining potting mix.
Mature trees generally do not require repotting and can be grown in their final location.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Turkish Hazel (Corylus colurna)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Fagales |
| Family | Betulaceae |
| Genus | Corylus |
| Species | Corylus colurna |
Similar in genus Corylus
Answers based on plant encyclopedia data
