Canada Thistle is a perennial weed native to Europe and Asia, now widespread across North America. It features spiny leaves and purple flowers, growing up to 1.2 meters tall. The plant spreads rapidly through its extensive root system and seeds, making it difficult to control. This invasive species thrives in disturbed soils, such as fields and roadsides. Canada Thistle can outcompete native plants, reducing biodiversity. Effective management often requires a combination of mechanical, chemical, and cultural practices to prevent its spread and minimize its impact on ecosystems.