Purple Loose-strife
You will easily spot large clumps of these purple or reddish flowers growing next to streams, lakes, marshes, in wet meadows, and roadside ditches in the late summer. Purple loose - strife, a beautiful garden plant with an aggressive nature, was first introduced into North America in the early 1800s. The plant was sold in North Dakota by its genus name Lythrum for at least 50 years. Purple loose - strife invades marshes and lakeshores, replacing cattails and other wetland plants.
