Common alder is a deciduous tree species. Its large, deep green leaves are easily recognised by their blunt tips. The species has dark grey, coarse bark and strong trunk. Common alder flowers between March and April. It grows bigger than its relative, the Grey alder (Alnus incana).
Common alder is flood-tolerant and thrives in wet and nutrient-rich habitats like herb-rich forests, spruce mires, on the edges of nutrient-rich peatlands as well as on the shores of rivers and streams. Common alder mires are protected biotopes by the Nature Conservation Act of Finland. The species is found in almost all of Europe, Siberia, the Caucasus, Asia Minor and the Middle East.
Common alder is used for sauna benches, woodchips for smoking and wall panels. At one time wooden shoes and bowls were made from it. Common alder improves soil quality because it drops its leaves while green and it can bind nitrogen straight from the atmosphere.
Common alder is a typical tree species on buffer zones along waters. It is commonly found in protected aquatic habitats as well.
|wood||deadwood||stage of development||key biotopes|