Q.kill new growth on ivy without killing whole plant
I have seen the newest growth on English Ivy die back to a given line. The rest of the ivy bed is green and healthy. What did they use to spray (and kill) the new growth that grew over the curb, but not kill the rest of the ivy in the bed?
I would be leaning towards boiling water. It will kill any vegetation it touches, but not what it does not touch and you can control where the stream of water goes.