Cheryl from Yakima, Wa writes
Casoron 4G Herbicide is a pre-emergent only and will not kill anything actively growing. Yucca is very tough! First you want to cut the plant down as much as possible. Then you can apply a stump remover like Fertilome Brush and Stump killer. It will take 1-6 weeks to kill the root system. You will still have to do your part by removing the stump. Fertilome Brush and Stump Killer will kill the root system and make the stump stop sprouting but it does not make the stump disappear. The exact wording on the product label is "To kill Stumps and prevent sprouting, apply the undiluted product with a paint brush or backpack sprayer to completely cover the freshly cut surface. Do not reuse paint brush. Wrap in several layers of newspaper and discard in trash."
Answer last updated on: 05/12/2019
