Clarence from New Roads, La. writes
If you are wanting to completely kill the tree, you must kill and remove the stump. To kill a sycamore stump use a stump grinder to grind the stump down to ground level. You will then dig it out with the connecting roots. You could use a stump killer such as Fertilome Brush Killer and Stumper Killer to the newly cut stump within a few minutes after cutting. You would still need to do your part to remove the stump but the Fertilome Brush Killer and Stump Killer will prevent resprouting.
Answer last updated on: 02/24/2019