Salix alba, or white willow, is a non-native tree species, native to Europe and western and central Asia. It is a fast-growing tree highly tolerant of wet sites but has weak wood and is prone to storm damage. It features a shallow root system and is adaptable to various pH levels. Supplemental watering during dry periods and a layer of mulch can help moderate soil temperature and conserve moisture. It creates a litter of leaves, twigs, and branches, and its root system can disrupt drainage systems or concrete. White willow is best suited for larger landscapes. It is considered moderately messy due to the leaf drop and catkin litter.