Alnus incana 'Laciniata' (Cutleaf Grey Alder)
Michael's Opinion
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.
Botanical Information
| Family | Betulaceae |
| Genus | Alnus |
| Species | incana |
| Cultivar | 'Laciniata' |
| Category | Woody |
| Type | Tree (deciduous) |
Details
| USDA Hardiness Zone | 2 - 6 |
| USDA Hardiness Ref. | |
| Canadian Hardiness Zone | 0a - 5b |
| Canada Hardiness Ref. | |
| RHS Hardiness Zone | H7 |
| RHS Hardiness Ref. | |
| Temperature (°C) | -46 - (-21) |
| Temperature (°F) | -50 - (-5) |
| Height | 10 - 15 m |
| Growth | Medium |
| Flowering Period | March |
Description and Growing Information
| Landscape | A. incana ( the species) is often used in land reclamation, especially around abandoned coal tips. |
| Cultivation | Tolerant of infertile and wet sites. |
| Notable Specimens | Westonbirt, The National Arboretum, Tetbury, Gloucestershire, England. |
| 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. |
Photographs
