Master Gardeners of Northern Virginia

Invasive Plant Factsheet: Yellow Flag Iris (Iris pseudacorus)

This colorful ornamental perennial, introduced from Europe and still sold commercially for use in garden pools, has escaped from gardens and become an invasive noxious weed. It poses a threat to wetlands throughout much of North America, including Arlington and Alexandria, Virginia, as it colonizes in large numbers and competes with native shoreland vegetation.

2020 Invasive Plant Factsheet (Legal Size): Yellow Flag Iris (Iris pseudacorus)

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