So while the trees themselves may live for 80 ... Black alder, also called European alder (Alnus glutinosa), is an underutilized tree that should be seen more often. It can grow 24 to 30 inches ...

Or find the exact location of the largest trees across the state using the big tree viewer ... Ninth St. The European alder, alnus glutinosa, in Davenport stands at 99 feet tall and over 9 ...