Betula ermanii 'Polar Bear' (Polar Bear or Erman's Birch)
Botanical Information
| Family | Betulaceae |
| Genus | Betula |
| Species | ermanii |
| Cultivar | 'Polar Bear' |
| Category | Woody |
| Type | Shrub (deciduous) |
| Pronunciation |
Details
| USDA Hardiness Zone | 3 |
| USDA Hardiness Ref. | |
| Canadian Hardiness Zone | 1 |
| Canada Hardiness Ref. | |
| RHS Hardiness Zone | H7 |
| RHS Hardiness Ref. | |
| Temperature (°C) | -40 - (-35) |
| Temperature (°F) | -40 - (-30) |
| Height | 25 m |
| Growth | Slow |
Description and Growing Information
| Landscape | An excellent specimen tree. |
| Propagation | Propagate by seed, with light present for germination, although seeds may not come true. Can also be propagated through side-veneer grafts in late winter. |
| Cultivation | Very hardy, but prefers a deep, well-draining loam soil. |
| Pests | Prone to attack by several bracket fungi, as well as mildew and birch rust. |
| Habitat | Horticultural origin. |
Photographs
