Canada thistle

Asked June 13, 2020, 8:33 AM EDT

How to control and kill? In suburban back yard. We don’t want to use round up. We have prevented flowers from blooming

Baltimore Maryland

1 Response

The easiest option may be to cut the thistle at the base to exhaust the root system. This effort will have to be repeated. If you decide to use an herbicide, paint the thistle with a paintbrush using a nonselective herbicide containing glyphosate. Do not let it touch desirable plants as this kills everything. http://extension.umd.edu/hgic/topics/canada-thistle

Marian