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Credit: Smithsonian Environmental Research Center
Native and Introduced Phragmites: Native Phragmites (left) and invasive Phragmites (right). The invasive strain of Phragmites australis from Europe is one of the most rampant plant invaders in the eastern U.S. It can grow up to 15 feet tall and monopolizes light and nutrients, preventing any other plants from surviving in its shadow.
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