Average-sized tree, sometimes mature specimen of more than 20 m can be found. Little used species with a straight, grey trunk and strongly branching out. It is a strong grower with an open crown. The leaf is similar to A. incana, but has 8 to 14 pairs of veins. It is also bigger than that of A. incana, being 10 - 15 cm long and 12 cm across. A striking feature is that the leaf margin is slightly curved inwards. The topside of the leaf is glossy dark green, the underside is bluish-green. The catkins appear as soon as the end of January, they are 15 cm long and purple red. The strobiles appear as soon as the end of summer and decorate the tree into winter. The soil requirements are few, although surfacing is less well tolerated.
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Alnus rubra can eventually reach a height of 10 - 20 (25) m, depending on the site and climate conditions.
Alnus rubra is average growing and can eventually reach a height of 10 - 20 (25) m, depending on the site and climate conditions.
The right time to plant Alnus rubra is during the dormancy period. In Western Europe, Alnus rubra with root balls can generally be planted from mid-November to late April, although this depends strongly on the climatic conditions and the species of tree.
