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They get knocked down—but they get up again

University of Michigan researchers discovered that oxalis, a weed commonly known as wood sorrel, produces more flowers after being exposed to low doses of the herbicide dicamba. The finding suggests that farmers and homeowners may inadvertently make weeds stronger by using herbicides on their fields or lawns.

SourceUniversity of Michigan·JournalNew Phytologist·DateOct 15, 2026