Unlike most trees, weeping willows can be difficult to get rid of. If you accidentally leave a small branch or root on the ground after cutting the tree, it will probably sprout up into another weeping willow for you to cut down. Though weeping willows are both graceful and beautiful, their large roots and branches can be a hassle, especially if you have limited space in your backyard. Because these trees are often persistent, killing them completely takes careful planning and concentration.
Cut down the weeping willow tree with your chainsaw. Cut into the trunk of the tree, as low to the ground as you can.
Get rid of any twigs or roots still on the ground after you finish cutting down the tree. Because these will sprout new weeping willows, search every inch of your yard.
Brush the stump with herbicide every other day for a couple of weeks in order to kill it and the remaining roots. The stump will absorb the herbicide as if it were water, and the poison will spread to the root system. Use a paintbrush instead of a spray to prevent the herbicide from reaching any nearby plants.
Dig five feet around the stump with a shovel. Pull the stump out of the soil with a backhoe.
Wear gloves and safety glasses when using the chainsaw or backhoe. Make sure you have enough experience to use these tools. Check your state's laws before disposing of the dead tree stump.