A really hardy and tough medium tree, capable of coping with cold, wet soils and exposed situations.
Grey alder is a fast grower well suited to industrial areas and street plantings.
Its pointed grey leaves readily distinguish it from Alnus glutinosa.
Introduced from Europe in the 1780s it does best on calcareous soils and tolerates air pollution.
In the recent past the North American tree bearing the same generic name has been changed to Alnus rugosa to avoid confusion amongst well travelled tree enthusiasts.
Profuse pink/yellow catkins are produced just prior to spring.
Mature height: 117-22m
Mature spread: 4-8m