American Hazelnut Tree. Corylus Americana. Approx 1 ft in Height American hazelnut can grow as a shrub or medium height tree (5 - 15 feet) in height. It grows in dry or moist thickets, woodland, and borders of woodland, in valleys and upland. Leaves are borne simply on bristly stalks, the bristles somewhat granular. Flowers are separate with male and female flowers on the same tree. Male catkins droop and form the season before opening. Female flowers are enclosed in a scaly bud. They have red stigmas, which protrude at the tip of the bud. The fruit is a globe shape nut enclosed in a large, leaf-like covering. This species flowers March - May with fruit ripening July – September. Note 2 seedlings are required in order for the trees to produce nuts. PLEASE RESERVE YOUR PURCHASE VOLUME QUANTITY NOW, FOR EARLY SPRING DELIVERY 2016