My hayfields are full of asiactic day flower. How do I get rid of it.
What kind of hay fields are you talking about? Just grass hay or mixed. There are no herbicides available to control asiatic dayflower in mixed stands. There is one herbicide that could be used for control of dayflower species, but does not say asiatic specifically. That herbicide is triclopyr in Garlon XRT. I'm not sure how effective this will be, but is worth a shot. If this does not work, then you may have to consider rotating some of the land out of hay and into crop production if the slope of the land is not too great. I wish I had more options. This is a difficult weed to control.