Knowledgebase
weeds in aspargus #873476
Asked June 17, 2024, 3:19 PM EDT
Jackson County Minnesota
Expert Response
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.