Poison Ivy

[GregManning]

If you have time, 18% triclopyr 4 in impel applied to the base of the vine with a 1gallon pump sprayer kills most woody-stemmed plants within two months via a plant-specific growth inhibitor. One avoids the tree that the vine is growing on, because that is woody too. I'm not sure I've ever had a client with 1-2 months...

Roundup works within two weeks, but is likely to just burn the leaves of woody plants without killing the plant. It's used more for herbaceous plants.

Monsanto makes "Roundup® Poison Ivy Plus Tough Brush Killer".
This product formulation came out after my last major campaign.

I used standard RoundUp, but I did add a surfactant to better "wet" the oily vegetation.
It was very effective.
My biggest problem was keeping track for what had been sprayed previously, when I went to refill.
Next time I'll use a can of Hi Viz paint.

 

[LimbLoppa]

For poison Ivy.......I believe Napalm would be appropriate.

 

[GregManning]

For poison Ivy.......I believe Napalm would be appropriate.

Maybe from very high altitude.
The active oil(s) can be vaporized when burned.
Inhaling that can be very bad news.

 

[colb]

Monsanto makes "Roundup® Poison Ivy Plus Tough Brush Killer".
This product formulation came out after my last major campaign.

I used standard RoundUp, but I did add a surfactant to better "wet" the oily vegetation.
It was very effective.
My biggest problem was keeping track for what had been sprayed previously, when I went to refill.
Next time I'll use a can of Hi Viz paint.

Nice! I looked up the active ingredients - glyphosate ("roundup") and triclopyr 3A. 3A is hard on the eyes (amine-based solution - think Windex in your face). Also, 3A is useful on the leaves and freshly-cut stem/stump only - it will not penetrate the bark. When used on cuts, the concentration needs to be much higher than the typical 8% that triclopyr 3A is sold at, at the home improvement stores. Based on the above information, 3A is usually going to be inconvenient to apply.

Triclopyr 4 (aka Garlon 4 or Element 4) is an esther formulation that mixes with oily vectors like Impel, and the oil soaks through woody/bark tissues. It is not sold at the home improvement stores because a homeowner might put too much out in their property (think 18% broadcast spraying vs. 2.5%, and an oily vector vs. water, on a field = disaster). Regulations for it are very different in places like CA and FL. With the Impel mix, one walks up to the base of the ivy vine, uses a method that avoids applying herbicide to the host tree, and awaits the kill for a month or two. This works for most woody vines (exceptions include wisteria and non-woody vines like Smylax spp.).

I suppose you could just cut the stuff and get the same effect, temporarily...

Hth,
Jon

 

[Gorman]

In case you folks haven't heard,
That product, Zanfel is the best thing to get rid of the rash. Works right away.