How do you kill a trumpet vine. It is a nightmare invading eveywhere?

Dig it out at the root. You might be fighting for a few seasons, just stay after it and eventually it will be gone.

You have to pull it up every time you see it. Also, it will reroot and keep coming back so in the fall when weeds die back and grass still grows do the weed and feed application to help get more grass and less weeds. I have the same in my yard and after 5 yrs we finally are starting to make good progress

You have to get all the root; a near impossible task; especially if it’s in with other plants that you want to save. I gathered up as much of the vine as I could, leaving it all intact, rolled it into a large garbage bag and doused it (in the bag) with round up. I tied the bag shut and left it there in the sun for a couple of weeks to make sure it got too the root. It eventually came back though... so this process has to be repeated with every vine that comes back till the roots in the ground are all dried up. Trying to dig them up always leaves pieces of root behind. Let the vines get about 6 to 8 feet long so there are enough leaves to feed the poison to the root.

If you are ok with using roundup, another way to do it is easier. Cut it down, but leave a stump. Pint the roundup on generously with a brush on the cut. snip off a little bit to get a fresh cut and repaint if it starts growing back. By cutting it down to a stump, you are closer to the root for the killer to get to the roots quicker. Where I live the wild grapes are really hard to kill because of the underground root system. My neighbor had a huge one that was even growing under her siding. I applied the same principle and cut into the stump frequently. If a new sprout started growing off the side, I would pull it off and paint the open area, and use a hatchet to make other fresh cuts, and I would put the roundup in them. It took almost a year, but it finally died and hasn't come back for four years.

I haven't tried it, but I think someone should invent an, " Agricultural type Needle Syringe", that you put poison type liquid injected right into the weed at the spot, between the area of plant forming and the root to kill the top and the root at the same time.

If some one knows if & where I can get this huge syringe with an extended long arm, I would love to know..

Normally I use 2 jugs of boiling water onto the weed and it never comes back again ...well ......so far.. after 2 years it hasn't.

This is just the thing! I find this works wonderfully. You have to cut the vine and then brush this on the top of where you cut it. Bonide It will travel down to the roots and kill the plant. Cut it wherever it is coming back and brush that on.