Alnus incana
'Laciniata'
Cutleaf Grey Alder
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This fine deciduous broadleaf cultivar was introduced circa 1860 and won the First Class Certificate in 1873. It tolerates urban conditions well and is highly recommended to anyone looking for a pyramidal tree to place along the edge of a street or driveway.
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| Family |
| Betulaceae |
| Genus |
| Alnus |
| Species |
| incana |
| Cultivar |
| 'Laciniata' |
| Category |
| Woody |
| Type |
| Tree (deciduous) |
| USDA Hardiness Zone |
| 2 - 6 |
| Canadian Hardiness Zone |
| 0a - 5b |
| RHS Hardiness Zone |
| H7 |
| Temperature (°C) |
| -46 - (-21) |
| Temperature (°F) |
| -50 - (-5) |
| Height |
| 10 - 15 m |
| Landscape |
| A. incana ( the species) is often used in land reclamation, especially around abandoned coal tips. |
| Cultivation |
| Tolerant of infertile and wet sites. |
| Growth |
| Medium |
| Habitat |
| Horticultural origin. |
| Bark/Stem Description |
| Smooth, grey bark with grey-downy shoots. |
| Leaf Description |
| Leaves are 4-10 cm, variably with 8 narrow lobes, and dull green. |
| Flower Description |
| Male catkins 5-10 cm, appearing in clusters of 3-4. |
| Fruit Description |
| Catkins to 1.5 cm, ovoid, appearing in bunches of 4-12. |
| Notable Specimens |
| Westonbirt, The National Arboretum, Tetbury, Gloucestershire, England. |