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Red Alder is an extremely fast growing medium sized, large leaved tree which carries male catkins up to 15cm long in the spring. It is a good choice for waterside and pioneer plantings, since it fixes nitrogen from the air into the soil. The bark was used as a source of red dye and of salicylic acid(aspirin)
Alnus rubra
Common name: Red Alder.
Native: Western North America.
Provenance: UK
Size and spread (10 years): 12m x 5m
Treatment required: Requires pre chill.
Seeds / kg: c. 280,000 germinal per kilo
Ideal sowing period: Spring
Soil conditions: Most soils but prefers moisture, not tolerant of chalk.
Planting instructions: Makes a good windbreak, quickly. Regenerates poor soils.
Mature height: 25m
| Weight | 5.00 g |
|---|---|
| Size | Mini Seed Pack (25 seeds approx.), Seed Pack (4000 seeds approx.) |
| Genus | Alnus |
| Family | Betulaceae |
| Hardiness | Hardy |
| Life Cycle | tree |
| Evergreen | deciduous |
| Requires | damp |
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