Black Willow
Salix nigra

Description

Salix nigra, or black willow, is a native North American tree that is fast-growing, short-lived native tree with a shallow root system. It prefers moist to wet soils with good drainage, but can adapt to a variety of soil types, and naturally grows near water sources such as streams, rivers and wetlands. It plays a valuable role in preventing soil erosion and flood damage by binding soil banks. Black willow is generally not advised for residential landscapes due to its susceptibility to breakage, potential pest and disease issues, need for consistently moist soils, litter problems, and its mature size. Salix nigra drops a significant number of leaves and catkins, with the heaviest shedding in the spring. It is considered extremely messy due to the leaf drop and catkin litter that require regular cleanup.
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Planting Site and Native Range

Planting Site
Naturalization, Parks, Highway, Residential

Management Notes

Management Notes
Susceptible to storm breakage Shallow, aggressively spreading and suckering root system can cause problems for infrastructure

Tree Characteristics

Growth Rate
Fast (60cm or more per year)
Width
9 - 18m
Height
9 - 18m
Soil Quantity
>30 m
Leaves
Deciduous

Insects and Diseases

Insects and Diseases
Just like Poplar (Populus) species, Willows (Salix) are also affected by many pests and diseases. Some of these pests and diseases include canker, blight, aphids, scale, borers, etc. Although there are many pests and diseases, this species makes an excellent specimen tree in wet areas where most trees have difficulty growing.

Tree Tolerances

Soil Salt Tolerance
Unknown
Salt Spray Tolerance
Unknown
Flooding Tolerance
High
Drought Tolerance
Low
pH Tolerance
Tolerant of acid to slightly alkaline soil (pH 5.0 to 7.5)
Shade Tolerance
Full Sun
Plant Hardiness Zone
Zone 4 (a/b) | Zone 5 (a/b) | Zone 6 (a/b)
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