Q.I HAVE A SOLUTION, NOT A QUESTION, FOR KILLING GIANT IVY ( And Perhaps Other?) VINES
I had a huge english ivy plant growing on the wall of a home that I purchased. It grew from a narrow strip of soil between the house and a concrete patio. It was reaching up 2 stories heading into the roof flashing. It Had to go… There seemed to be one thicker portion of vine. I got out my trusty drill fitted with 1/4 or 3/8 inch bit and drilled down at a steep angle to what I supposed was the center of this very large stem. Placed a small funnel in the hole and slowly poured Roundup in the funnel. It just kept going in!! I was amazed!!! Probably fed between an third and a whole cup into the plant. It died and I let it over winter and pulled the dead remains easily off the wall the following spring. I have no clue if I used just enough or way too much roundup, but I was happy to not have to spray near other plantings that I wanted to keep.

Certified GKH Gardening Expert
Thank you for sharing! This seems like an effective way of killing off an invasive species, safely.