Weedy Wednesday – Dangerous Beauty

The purple loosestrife is an introduced invasive species in North America where it is now widely dispersed. A single plant may produce over a million tiny seeds annually, leading to huge infestations. Although quite striking, purple loosestrife infestations can result in significant disruption of water flow in streams and rivers along with a sharp decline in biological diversity. The decline in biodiversity comes about as native plant species, most notably cattails, are crowded out by the infestation. As a result, the life cycles of many other organisms are affected, from water-dwelling bird species to frogs to algae.


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