Best herbicide to kill Kudzu?

Lava of a volcano explosion may kill it

Roundup works fine, the problem is how mature the root is. Like poison ivy, the roots store all the energy so you spray and watch the leaves die, but if it has large roots, the leaves grow back, rather, new shoots come out of the ground. You have to keep at it, and eventually, the roots will run out of energy and die. If it's a very mature patch, it can take years if just using herbicide. That has been my personal experience and research. There's probably something more hard core than an average person can get at the hardware store, I'm sure professionals have some secret shite.

Garlon or Triclopyr will kill it. May take more than one application but it will kill it.

ETA: that’s according to a guy from the MS forestry dept.

Imazapyr

There was a community group in my hometown called the “Kudzu Coalition”. They would go out to public spaces around town and clean up the kudzu. They also taught people how to remove it.

Basically they would find the root crown and cut below it. The crown sits pretty much on the ground level. It cannot rejuvenate without the crown. You’d be amazed how much vegetation comes off one root.

I think the goat folks let the goats eat all of the leaves and then they manually remove the crowns.

I used a nuclear mix of roundup, 2,4,D, surfactant and whatever else I had on hand. I was ready for war.

I started by removing as much as I could by hand. Had a company come haul it away, couldn't chip it or burn it due to so much poison ivy also with it.

I rented one of those heavy duty billy goat mowers and leveled what I could, and sprayed religiously for a couple seasons, and I haven't seen it come back at all. Now, the devil weed...thorny crap... is a constant battle.

Tordon