In 1890, South American parrot feather was introduced through the aquarium trade; plant fragments later helped it spread to at least 26 states

Introduced in the United States around 1890, parrot’s feather is a fast-growing aquatic plant known for its ability to spread through small stem fragments, forming dense colonies in waterways. These thick mats obstruct navigation and clog drainage systems, while also competing with local plants for crucial resources such as sunlight. Effectively managing this invasive species poses ongoing challenges for water management professionals.
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