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weeds in aspargus #873476

Asked June 17, 2024, 3:19 PM EDT

HOW CAN I PREVENT LAMBQUARTERS FROM COMMING UP IN MY ASPARGUS ? I HAVE BEEN USING PREEN BUT IT DOES NOTHING TO PREVENT LAMBQUARTERS. ALSO HOW CAN I GET RID OF THE LAMBQUARTERS ONCE IT IS UP ?

Jackson County Minnesota

Expert Response

Thank you for writing.
One strategy would be to go with the flow, Lambsquarters is edible, great for salads, roughly comparable to a mild spinach.
Free food! https://www.bbg.org/article/weed_of_the_month_lambsquarters

Your best strategy is before it gets established to weed and mulch your asparagus patch to prevent germinating Lambsquarters from coming. 
https://extension.wvu.edu/lawn-gardening-pests/weeds/common-lambsquarters#:~:text=Controls%20for%20Common%20Lambsquarters&text=Mulches%2C%20such%20as%20black%20plastic,herbicides%20specific%20to%20labelled%20crops.

After it emerges, weeding and perhaps dicamba. https://ipm.ucanr.edu/agriculture/asparagus/integrated-weed-management/#gsc.tab=0  but dicamba is known for blowing onto other plants and damaging them. https://extension.umn.edu/yard-and-garden-news/noticing-herbicide-drift-your-garden

Preen is specifically labeled to not use in Vegetable gardens.  Follow the label.

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