Suggested Native Replacements:
- Cowslip, Marsh marigold (Caltha palustris var. palustris)
- Narrow-leaved blue-eyed-grass, Narrow-leaved blue-eyed grass (Sisyrinchium angustifolium)
- Northern blue flag, Larger blue flag (Iris versicolor)
- Virginia blue flag, Southern blue flag (Iris virginica)
Common Name
Yellow flag
Plant Form
Herbs
Region
Coastal
Piedmont
Mountain
Considered Invasive by the State of Virginia?
Yes
Threat Level
High
Additional Info
Notes: 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.
Method of removal: Pull up by roots
Additional links
Native Look-alikes
iNaturalist Research-grade Observations