Problem Plant: Yellow Flag Iris

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 as it colonizes in large numbers and competes with native shore land

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Tried and True Plant Fact Sheets


Tags: Colonizes natural waterways and wetland areas
Spreads in dense stands, out-competing native
plants, Compacts soil, Clogs irrigation systems and streams, Buoyant seeds spread long distances, Small sections of rhizomes establish new plants, Little wildlife value, Wetland perennial with colorful flowers, Blue Flag (Iris versicolor), Eastern Blue-Eyed Grass,(Sisyrinchium atlanticum), Marsh Marigold (Caltha palustris), Slender Blue Flag (Iris prismatica), Virginia Blue Flag (Iris virginica)