Sour Gum, Tupelo, Black Gum List of files and visuals associated with this text. Sour gum is a hard wooded tree growing 75 feet tall. It grows in wet areas and is rarely attacked by pests. The tree has a medium growth rate and horizontal branching.
Sour gum prefers a moist, acid soil, is difficult to transplant, but has a good red fall color.
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