Chemical needed to kill Shepherds Purse weed (or plant)
We have a private gravel road that we have been killing the weeds with PRONTO Big N'
Tuff Weed killer. The main ingredient is 41% Glyphosate which has worked great until this year. We have a new weed growing along the outside of the road that just developed this year. Pronto did not touch it. Would you know which chemical to use to kill it or which weed killer to buy. Thank you
The University of Maryland has an bulletin on managing Shepherd's purse which includes specific products that can be use to manage it and also cultural and mechanical means of helping to reduce this weed.
Please see the following website: https://extension.umd.edu/hgic/topics/shepherds-purse