Cutleaf teasel

[Telemark]

Well this year the cutleaf teasel has gotten totally out of control. In one corner of the field, the teasel has formed a total monoculture that is basically impenetrable to humans and any type of game animal. I think it's a refuge for mice and voles, because I found a lot of girdled saplings nearby. And the teasel patch is spreading, threatening to take over the entire field.

Does anyone have experience battling cutleaf teasel on a large scale? Internet says triclopyr and 2,4D are effective. Can I combine both in the same sprayer, or do I have to do two applications? Or do I have to choose one or the other? Can I spray it in November?

 

[Kdog]

Never heard of this one and had to look it up. I know you can mix triclopyr and 2,4D and may also want to look at dicamba in addition to a NIS.

 

[Native Hunter]

Crossbow herbicide contains both triclopyr and 2,4D. Those are the active ingredients that are mixed together.

I wouldn't spray in November. I would spray mid summer.

 

[Telemark]

Ok, I'll mix up a full dose of triclopyr and 2,4D with a squirt of dish soap and go to town on them in July. Thanks for the help.

 

[RGrizzzz]

https://plantscience.psu.edu/research/projects/wildland-weed-management/publications/working-lands-factsheets/common-teasel/@@download/file/CREP_WS_5_DIWSI.pdf

 

[Telemark]

Thanks for the link. I'll try to get them again in the fall and Spring with the same mix. It would be a lot easier to spray them at the rosette stage.

 

[b116757]

They have been particularly bad this year in my area also I don’t have them my properties but they are horrible in many road ditches.

 

[Telemark]

They have been particularly bad this year in my area also I don’t have them my properties but they are horrible in many road ditches.

I got back to Ohio for a few days last week, and I was shocked by how much I saw. I don't know if I just never noticed it before, or if this is a bad year for it, but teasel was growing all along I-75, and the field where I have the problem patch turned out to have several more patches. I did what I could to knock back a good amount before it made viable seed, but I will just have to get back out there in Fall and spray the rosettes. The area I sprayed in June was nearly bare dirt, so the herbicide seems to be effective.

Unfortunately, a whole bunch of marestail popped up in the field as well. I sprayed most of it, but we'll see how it goes.

 

[b116757]

Our county weed guy seems to think the teasel is reaping the benefits of a couple drought years in a row and this year being exceptional wet has triggered a major germination of dormant seed.