I have a locust bush that is over running my lawn. I cut it off and it is comming back so what can do to kill it so it doesn't grow back? I am going to rent a stump grinder later in the year, but have to wait until I get a few more trees down. In the meantime I want something I can spray on this thing to put an end to its rampage.

Hey everyone, well, my beautiful lilac bush (tree actually) is not doing so good. Noticed last week that the leaves at the top were turning brown then took a good look at the trunk, saw quite a few holes and now the trunk has a crumbly kind of look to it. I am assuming I have the dreaded lilac borer. Now, not all parts of the tree are infected, some are still ok. So my question is, if i just cut off the infected parts, and leave the other branches that look ok will that save parts of it? Or should I just cut the whole thing down and start all over again? Or is there any way to get rid of these borers???? I don't really want to cut the whole thing down, it's a beautiful lilac tree and I've had it in the back yard for awhile. Thanks!! Wendy