Sourwood
Oxydendrum arboreum

Description

Oxydendrum arboreum, or sourwood, is an ornamental shade tree that is native to the eastern USA , known for its year-round visual appeal. It thrives in acidic, moist, well-drained soils and is drought-tolerant with long blooming periods. While it generally faces few disease or pest issues, it can be sensitive to pollution, soil compaction, and root disturbance, making it best suited for less urbanized areas. Sourwood is slow-growing and not tolerant of transplantation, so it’s best moved when young and through containers in spring. Though somewhat messy with fallen leaves, fruit clusters, and some flower debris, it adds charm to landscapes.
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Planting Site and Native Range

Planting Site
Parks, Residential

Tree Characteristics

Growth Rate
Slow (less than 30cm per year)
Width
6 - 8m
Height
8 - 12m
Soil Quantity
11 - 20 m3
Leaves
Deciduous

Insects and Diseases

Insects and Diseases
No serious or common issues in the urban environment.

Tree Tolerances

Soil Salt Tolerance
Moderate
Salt Spray Tolerance
Moderate
Flooding Tolerance
Low
Drought Tolerance
Moderate
pH Tolerance
Requires acid soil (pH 5.0 to 7.0)
Shade Tolerance
Full Sun Part Shade
Plant Hardiness Zone
Zone 5 (a/b) | Zone 6 (a/b)

Management Notes

Management Notes
None of significance
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