Knowledgebase

What is this weed? #634906

Asked May 13, 2020, 11:42 AM EDT

We are starting a garden out on a vineyard in Clifton. Wondering what this weed is? What's the best way to mitigate it?
Thank you for your time!
Lauren 

Mesa County Colorado

Expert Response

That looks like poverty sumpweed, Iva axillaris. It is a tough weed.  You can use glyphosate. There are several broadleaf herbicides listed for its control, but I would be very careful around the vines. We had a couple cases of vineyard damage from herbicide last year.  https://www.ag.ndsu.edu/weeds/weed-control-guides/USDA-Final.PDF  Always read and follow the label.
An Ask Extension Expert Replied May 14, 2020, 3:52 PM EDT

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