Black alders are planted to prevent water erosion and to fortify streams and river banks. The wood is used in hydraulic engineering and as solid wood for art and furniture carpentry as a commercial tree, the alder is more of a marginal phenomenon. Named Tree of the Year in 2003.
Location
The black alder is a light tree, it tolerates sun to light shade. Makes tree very undemanding. The black alder grow on wet and often flooded locations.
Characteristics
- Height: 30 m high
- Crown: Mostly pyramidal crown
- Trunk: diameter up to 1m
- Root: Deep heart root
- Flowers / fruits: The alder is monoecious, male inflorescences are 5-10 long catkins, female catkins are about 5mm on 2-3mm long stems. Fruits first green later brown.
- Leaves / needles
- Leaves about 5-9 cm long, 5-7 cm wide. Reverse ovoid to rounded. The leaves are shed green in autumn.
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Alnus glutinosa
Red alder
| 802 01 | Northwest German lowlands |
| 802 02 | Northeast German lowlands |
| 802 03 | Middle and East German Low and hill country |
| 802 04 | West German mountainous region |
| 802 05 | Upper Rhine Graben |
| 802 06 | Southeast German Hill and mountainous country |
| 802 07 | South german hill and mountainous country |
| 802 08 | Alps and Alpine foothills |