Black willow - salix Nigra

​​Common Name: Black willow

Scientific Name: 
Family: Salicaceae 
Genus: Salix
Species: nigra

Hardiness Zone: 4-9
Height: 30 to 60 ft
Width: 30 to 60 ft

Description:
This wet site loving species has one of the largest range of willows in North America. Preferring moist, well-drained, wet soil, black willow is intolerant of drought conditions. Weak-wooded, and prone to weak branch structures, this tree is susceptible to ice damage and regular pruning is required in a managed system. Roots are also known to invade sewer pipes. When selecting a planting site, it is important to keep these factors in mind. 

References: 
The Morton Arboretum. Found online: 
http://www.mortonarb.org/trees-plants/tree-plant-descriptions/black-willow