Corylus colurna (Turkish Filbert)
Michael's Opinion
A spectacular broadly pyramidal, multi stemmed tree. C. colurna has a soft grey patina to its bark and is quite distinct in the winter months. Should be given plenty of room where its form will be appreciated, which is broadly pyramidial. Not suited as a street tree, I have seen several specimens and, in fact have removed several that seem to suffer from Verticillium Wilt. Removal of infected limbs are requirements in growing this regal tree.
Botanical Information
| Family | Betulaceae |
| Genus | Corylus |
| Species | colurna |
| Category | Woody |
| Type | Tree (deciduous) |
| Origin | Albania, Azerbaijan, Bosnia, Bulgaria, Georgia, Greece, Iran, Montenegro, Romania, Russia, Serbia, Turkey in Asia and Turkey in Europe. |
| Pronunciation |
Details
| USDA Hardiness Zone | 6b - 7a |
| USDA Hardiness Ref. | |
| Canadian Hardiness Zone | 6b |
| Canada Hardiness Ref. | |
| RHS Hardiness Zone | H6 (observed growing well in H7) |
| RHS Hardiness Ref. | |
| Temperature (°C) | -20 to -15 |
| Temperature (°F) | 4 -5 |
| Height | 20 m |
| Spread | 8 m |
| Growth | Medium |
| Flowering Period | April |
Description and Growing Information
| General Description | A broadly pyramidal, multi-stemmed tree. This tree has been placed on the IUCN Red List as least concern. |
| ID Characteristic | Soft grey patina to its bark, slightly ridged. |
| Shape | Pyramdial. |
| Cultivation | Thrives in hot summers and cold winters, tolerates adverse conditions, full sun; well drained soil preferred. |
| Pests | Verticillium wilt. |
| Notable Specimens | Weldon Library, Univeristy of Western Ontario, London, Ontario, Canada. Royal Botanical Gardens, Burlington, Ontario, Canada. |
| Bark/Stem Description | Soft grey patina, slightly ridged. |
| Flower/Leaf Bud Description | Large, .85 cm long, softly pubescent. |
| Leaf Description | Alternate, simple, broadly ovate, 5-16 cm long, acuminate, cordate, doubly serrate. |
| Flower Description | Monoecious, male in catkins 5-7 cm long, female - inconspicuous. |
| Fruit Description | Nut 1-1.5 cm long, closely grouped 3 or more together in clusters. |
| Colour Description | Dark green in summer, yellow to purple in autumn but not at all showy. |
| Texture Description | Medium. |
Photographs
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