Spotted knapweed is an invasive plant species native to Europe and Asia. It typically grows in open fields, roadsides, and disturbed areas, reaching heights of 1 to 3 feet. The plant features distinctive purple flowers with black-tipped bracts and can produce thousands of seeds, which spread easily by wind, water, and animals. This plant is known for its ability to outcompete native vegetation, leading to reduced biodiversity. Its deep taproot allows it to access water and nutrients more effectively than many native plants, making it a persistent threat to ecosystems. Control methods include mechanical removal and herbicide application.