Foliar spray for buckthorn

[ross0201]

I want to clean up some of the smaller buckthorn on my place while it's the only green thing out there. I haven't had much success with foliar spraying, I think I wait too long and the leaves on their way out.

Does anyone have any recipes they have had luck with? This site (https://grasslandrestorationnetwork...n-foliar-treatments-with-triclopyr-herbicide/) describes what I see, zombie trees, and recommends a pretty hot mix of triclopyr, 10%. Penn State Extension (https://extension.psu.edu/one-herbicide-mix-to-do-it-all-almost) recommends a glyphosate/triclopyr but their recipe is lb/acre and I get confused on turning that into spot spraying.

Thanks for any help!

 

[Telemark]

Maybe try basal bark treatment if foliar doesn't work well.

 

[Brian662]

My recipe for foliar is:
8 oz/gallon triclopyr 4
1 oz/gallon MSO
a splash of blue dye

If you go up to the plant and you tug on a leaf and the leaf falls off relatively easily, the spray won't work, in my experience. Lots of variables but here in SE MN I am done with foliar no later than Nov 1. I'll be doing some this afternoon and maybe tomorrow at my place and that's it for the year.

Be sure to coat every leaf during application and you will get some resprouts the following year but they are minimal and normally at the base of the plant making it easy for the touch up work.

 

[ross0201]

Maybe try basal bark treatment if foliar doesn't work well.

Thanks, I do lots of basal and cut stump,I just want something to go after the carpet of seedlings I have coming up.

 

[ross0201]

My recipe for foliar is:
8 oz/gallon triclopyr 4
1 oz/gallon MSO
a splash of blue dye

If you go up to the plant and you tug on a leaf and the leaf falls off relatively easily, the spray won't work, in my experience. Lots of variables but here in SE MN I am done with foliar no later than Nov 1. I'll be doing some this afternoon and maybe tomorrow at my place and that's it for the year.

Be sure to coat every leaf during application and you will get some resprouts the following year but they are minimal and normally at the base of the plant making it easy for the touch up work.

Around 8%, I'll give this a shot of the leaves feel good, thanks!

 

[Telemark]

Thanks, I do lots of basal and cut stump,I just want something to go after the carpet of seedlings I have coming up.

Sheesh. You have a bigger problem than I do. I killed a few buckthorn with loppers and a cut-stump treatment, but I've never had them come back in force. You might have to spray several times in order to exhaust them. That's how I treat dock. I can kill the leaves back, but the roots seem to hold enough energy to push new growth a few times. A plant can't live without leaves to make new energy, so persistence can be the difference.

 

[ross0201]

Yeah, we bought this place about 5 years ago, the previous owners weren't keeping up on it. This will be my 3rd winter bring serious about it. I can make make a lot of progress just targeting trees with berries with basal spraying. I'm just not sure how to go after the next generation.

 

[Hoytvectrix]

There is some really interesting work from the University of Minnesota on managing buckthorn. They are proposing crowding out seedlings via revegetation and have been doing research on this for several years. There is a pdf in the following link that breaks down recommended plantings based on habitat.

Using plants to control buckthorn | The Cover It Up Project

coveritup.umn.edu

 

[ross0201]

I saw that but I haven't acted on it. I did see a few seeds suppliers selling a mix tailored for this.

There's also a small team looking at fungus that is lethal to buckthorn. They're looking for test sites and came out to check out my place but the size of trees he was looking for were in a flood plain and that wasn't what he was shooting for.