European Alder

Basisdaten

european alder (Alnus glutinosa) leaf
european alder (Alnus glutinosa) leaf
  • european alder (Alnus glutinosa) leaf
  • european alder (Alnus glutinosa) leaf  underside
  • european alder (Alnus glutinosa) flower
  • european alder (Alnus glutinosa) flower
  • european alder (Alnus glutinosa) fruits
  • european alder (Alnus glutinosa) fruit
  • european alder (Alnus glutinosa) axial buds
  • european alder (Alnus glutinosa) trunk / stem
  • european alder (Alnus glutinosa) crown
  • european alder (Alnus glutinosa) tree in Winter
description: 

The European alder (Alnus glutinosa) is also known as red alder in Europe, but it is not to be confused with the Red alder (Alnus rubra), which is widespread in North America, where it is also called Oregon alder.

Tree profile

name botanical: 
Alnus glutinosa
family: 
Birch family (Betulaceae)
species: 
deciduous tree
height: 
8 - 25 m (26 - 82 ft) – also multi-stemmed
leaf: 

The Alder leaf is rounded to ovate roundish and 6 – 12 cm (2.4 – 4.7 in) long and broad. The veins go opposite from the central axis of the leaf. The leaf has no peak. The leaf margin is double serrated.

leaf shape: 
roundish
leaf margin: 
serrated
leaf position: 
alternate
fall foliage: 
brownish
flowering: 
March - April
blossom color: 
brown
blossom description: 

The male flowers (catkins) are conspicuous, the female flowers are inconspicuous.

gender distribution: 
monoecious
fruit: 

Small woody cones, first green then dark brown.

branches: 

The branches are smooth and brown-green.

bark: 
The bark is at first smooth and reddish brown with lenticels. At the age black brown and flat-scaly.
root: 
Heart-rooting plant- Shallow-rooting plant, far reaching roots
location: 
Sun to half-shade
soil: 
sandy to loamy, feucht
ph value: 
neutral to slightly acidic
usage: 

riverbank area, pioneer plant

Typical diseases for European Alder

Typical fungi for European Alder