They produce abundant seeds, plus spread through their roots [rhizomes]. “New plants pop up from the roots, so where you had one Canada thistle last year, you might have 30 this year ...

or lavender-colored flowers with flat bracts and pointed tips that bloom in June seed are fluffy, white tufts of hair that are wind dispersed Note: Another key characteristic of Canada thistle is the ...

Canada thistle can be controlled by keeping it from blooming and spreading seeds. Mow short at two-three inches throughout the season. The plant will keep trying to bloom until freeze-up.

to avoid deep burial of weed seeds. Alternating intensive tillage during fallow years with cropping and spring and fall tillage can be used to reduce severe perennial weed problems. Fallow may also be ...

and covered in spines often found with multiple flowers per stem wind dispersed seeds carried by clusters of cotton-like fuzz Note: European marsh thistle is distinguished from Canada thistle by ...