Yellow iris was brought from Europe as a garden plant. It has escaped from gardens, and it is now widespread in the United States and Canada. In Connecticut, yellow iris is considered an invasive weed. More on this topic from Invasive Plant Atlas of New England.
- Family: iris (Iridaceae)
- Habitat: marshes, streambanks, pond edges
- Height: 1 to 3 feet
- Flower size: 3 to 4 inches across
- Flower color: yellow
- Flowering time: May to July
- Origin: Europe, Asia