Black Alder
Alnus glutinosa
Height: 40'. Spread: 25'.
Light requirement: full sun to part shade.
Growth rate: rapid. Habit: pyramidal.
Flowering - time/color: catkins, strobile.
Foliage - spring/summer: glossy green.
Foliage - fall: green, brown (not showy).
Fruit: nutlet.
Attributes: street tree that grows in difficult sites.