Blue flag iris (Iris versicolor) is a beautiful semi-aquatic plant. Deep green foliage and striking blue-violet flowers appear on 2- to 3-foot stalks in late spring to early summer. Leaves are narrow and sword-shaped. There are many species of blue flag iris and native plants are found along the edges of swamps, wet meadows, stream banks or in forested wetlands.
Yellow flag iris (Iris pseudacorusis) a wetland plant that is especially showy during its short blooming period. This good-looking plant has been transplanted into well-watered gardens all over the world and has widely escaped and is considered and invasive species even tho it is used in sewage treatment, and is known to be able to remove metals from waste waters.
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