A big deciduous tree, the black alder is a large deciduous tree. In ideal growth conditions, it may reach 60 feet tall at maturity, with a crown that is broad and loosely pyramidal in form. On twigs, leaves are alternately placed. The leaves vary in form from oval to circular. The leaf margins have a coarse double-toothed appearance. Foliage is lustrous and dark green in hue, with no fall colour shift. Young leaves have a gooey resemblance to them.
Botanical Name : Alnus glutinos
Common Name : Black Alder
Height : 40 -60 ft
Spread : 20- 40 ft
Germination Info : Seed requires 30- 60 days cold stratification
Hardiness zone : 4-7
Average seed per ounce : Approx. 25,000