Canada thistle is a non-native, deep-rooted perennial that spreads by seeds and aggressive creeping, horizontal roots called rhizomes. Canada thistle can grow 2 to 4 feet in height. The leaves are …

Species Profile- Canada Thistle (Cirsium arvense), National Invasive Species Information Center, United States National Agricultural Library. Lists general information and resources for Canada thistle.

Canada thistle (Cirsium arvense), is a spreading perennial weed of crops, pastures, and disturbed sites. It is most troublesome in perennial crops, rangeland, and areas where reduced tillage is practiced. …

Canada thistle (Cirsium arvense) is an aggressive, creeping perennial weed that infests crops, pastures, rangeland, roadsides and Non crop areas. Infestations start on disturbed ground, including ditch …

Canada thistle is a cool season perennial which spreads by seed and vegetatively by creeping roots. In Indiana, Canada thistle normally initiates growth in spring, reaches the flower-bud stage the first …

This document provides a comprehensive overview of Canada thistle (Cirsium arvense), including its identification, distribution, life cycle, and various management methods.

Species Profile: Canada Thistle. Crowds out native species (Stachion and Zimdahl 1980); reduces crop and forage yields (Moore 1975)

Canada thistle is native to southeast Europe and Asia and was likely introduced to North America in the 1600s via agricultural seed. This plant is called Canada thistle because its introduction into New …

Jun 28, 2024 · Canada thistle (Cirsium arvense) is an invasive broadleaf weed originating from southeastern Europe and Asia. It is now widespread in the northern and western United States …

Jul 23, 2025 · Canada thistle (Cirsium arvense) provides edible and medicinal benefits when handled correctly. Learn how to identify, safely harvest, and use this often-overlooked plant.