Weeds: Canada thistle – Cirsium arvense
Weeds: Canada thistle – Cirsium arvense categories: C-E Weeds revision date: 2024-06-22 07:45 Canada thistle leaves and flowerPhoto by: T.W. Miller Family: Asteraceae (Compositae) Cycle: Perennial Plant type: Broadleaf Biology Canada thistle is an aggressive, spreading weed. The aboveground portions of the plants die back in the winter, but resprout from perennial roots in the […]