The Fagales order consists of trees from the Betulaceae family (Grey alder and Birch tree), along with Hazel, Hornbeam, Oak, and Chestnut tree. Grey alder is the most widely distributed Alder in Europe and western North America.
Grey alder is a rapidly growing, deciduous, multi-stemmed shrub or small tree, which tends to form thickets. The Alder typically grows between 2 and 5 m in height but may reach 12 m.
Alnus incana is collected in parks in Sweden.