Bob from Woodinville Wa writes
Casoron 4G Herbicide is a pre-emergent only and will not kill anything actively growing. We would recommend using Fertilome Brush Killer and Stump Killer. For the roots, apply the undiluted product with a paintbrush to completely cover the fresh-cut surface. Here is the link for the product:
http://www.domyownpestcontrol.com/fertilome-brush-killer-and-stump-killer-p-1545.html
Please let us know if you have any additional questions.
Answer last updated on: 03/22/2023