Answer: Sourwood, or Sorrel Tree, is native to the eastern U.S. and grows slowly to 25', and under the right circumstances can reach 50' in old age. Sourwood needs acid soil, full sunshine, regular water during the growing season, and a site all its own. Sourwood doesn't compete well with other plants, so don't plant it in a lawn or under larger trees. For this reason, don't plant shrubs or perennials directly under the Sourwood, where competition for water and nutrients would stress the tree. Aside from these cautions, Sourwood will provide spring leaf color, summer flowers, and fall leaf color.
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