how do I kill the jujube trees

Question

How do I kill the jujube trees that come from a tap root in a neighbor’s yard. These trees are full of thorns.

Answer 1

You can't really stop them if they are growing from suckers from the neighbors tree. You can cut them off and paint the cut with Roundup and that will kill it back to the root, but I will warn you that doing this may harm the neighbors tree.