Weeds on steroids

Asked July 8, 2016, 5:30 PM EDT

Greetings, I can usually control weeds throughout the years by pulling or mowing but I have a strain (so does my neighborhood) that defies mowing (it seems to thrive from mowing and comes back stronger and more prolific) and are so prolific now pulling is out of the question. I have bees so strong defoliants (round-up) are not an option. I have attached 3 pictures but I could not find any that have the blue flowers along the stems that are apparent more in early summer. My question is; can you identify the weed and is there any 'non lethal to humans and small critters' type sprays for controlling them? Thanks in Advance, Mark

Boulder County Colorado

2 Responses

Sorry for the delay in responding to your question.

Thank you for attaching the images. The plants appear to be chicory, which is considered a nuisance weed. To verify, please go to http://www.unce.unr.edu/publications/files/nr/other/eb9801.pdf and, then, scroll to page 20.

If you need additional information, contact the Boulder County office of the Extension Service. Their website is here http://www.extension.colostate.edu/boulder/

We researched possible control of chicory weed is by cutting down repeatedly prior to it going to seed, for non-lethal to humans and small critters.

Thank you,

Boulder County Master Gardeners.