Iris pseudacorus, commonly known as yellow flag iris, is a perennial plant native to Europe, Asia, and North Africa. It typically grows in wetland areas, such as marshes and along riverbanks, and can reach heights of 3 to 4 feet. The plant features striking yellow flowers that bloom in late spring to early summer, making it a popular choice for ornamental gardens. This species is known for its ability to thrive in various soil types, particularly in waterlogged conditions. While it is valued for its beauty, Iris pseudacorus can become invasive in some regions, outcompeting native plants and disrupting local ecosystems.