To furniture manufacturers, the Black Walnut means fine wood. To Haverford’s large squirrel population, it represents a food supply for the lean days. To tree lovers, the Black Walnut means a massive specimen with a spreading crown of stout branches, deeply-furrowed bark and dark green compound leaves. The Black Walnut is among the first trees to lose its leaves in the fall and the last to leaf out in the spring. This native tree is best on a large property because it grows over 100 feet tall and the large fruits can become messy.