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Green alder Rare tree species

The green alder (Alnus viridis (Chaix) D.C.) is not endangered in Germany.

Green alder (Alnus viridis (Chaix) D.C.)

Green alder (Source: G. Huber, ASP)

Green alder is not endangered in Germany. 32 populations with over 110,000 green alders have been mapped. Its main distribution is in the Allgäu Alps. In addition, there are 22 post-glacial relict populations with a total of only 1,000 individuals in the Black Forest.

Conservation activities are needed for the very small relic populations in the Black Forest and the large populations in the Alps with their specific gene pool. The genetic variation within the populations is significantly higher in green alder than in grey alder.


+49 0228 6845-3385

Dr. Michaela Haverkamp

Federal Office for Agriculture
and Food
Unit 331
Deichmanns Aue 29
53179 Bonn