
Willow sheds continuously rather than seasonally — fine twigs and small branches after every wind event, narrow leaves that pack gutters and mower decks, and catkins in spring. Homeowners describe it as picking up sticks every weekend from March through November, which is a different complaint from the once-a-year cleanup a sweetgum or catalpa creates.
Typically 30 to 50 feet tall with an equal or greater spread, reached in 15 to 20 years at up to several feet of growth a year; published lifespans vary widely, from roughly 20 to 30 years in a stressed yard setting up to 50 or more on a consistently wet site. Because the wood is heavy and water-soaked, the crown is broad, and the unions are unpredictable, a mature willow prices at the top of its height bracket — closer to a 60-foot maple than a 40-foot tree.