For years been using Remedy, diesel. Not 100% guarantee on hickory kills and poor results on black locust. Been reading how great Harpers mix works. With generic herbicides prices though would try this winter. Have herbicides sitting here ready to go and had a O crap thought. Will this mix spray at below freezing temps being 40% water. Thinking could add small quantity of green antifreeze. Temps could range between 5 and 32 degrees.
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Any experience using Dr Craig Harpers cocktail in freezing weather.
- Thread starter BC Buck
- Start date
Feelslikefar.
5 year old buck +
For hack and squirt? Will things be flowing enough inside the tree to work well?
Will be cut stump or ring.
Brian662
5 year old buck +
We've killed buckthorn DEAD with the garlon/diesel 1:3 mix down to 0 degrees on cut - stump treat. Never tried the Harper cocktail though. I'm sure he has some literature on the efficacy of his cocktail, unfortunately all of his stuff I have saved is on my desktop at work or I'd gloss it over.
You may try a search here for his TSI documents, amd its likely there is something in there about ambient temp applications.
You may try a search here for his TSI documents, amd its likely there is something in there about ambient temp applications.
bigboreblr
5 year old buck +
Think I'd stick with something diesel based. I've used the green picloram based gallon stuff in the winter at home on vines. Worked well.
I've girdled large trees with a 5/8th paddle bit with 3:1 diesel n triclopyr with good results. Did a few maples the year before with the green stuff. Didn't kill the tree, set it back a good bit though.
I've girdled large trees with a 5/8th paddle bit with 3:1 diesel n triclopyr with good results. Did a few maples the year before with the green stuff. Didn't kill the tree, set it back a good bit though.
omicron1792
5 year old buck +
Email Craig and ask him.
TreeDaddy
5 year old buck +
omicron1792
5 year old buck +
Me too.
GoldenTriangleIL
5 year old buck +
It will work in freezing temps. However, I now apply with a paintbrush and use a plastic nut container to hold herbicide. I also use a plastic face cover to keep herbicide out of eyes. Harper cocktail clogs all my spray bottles.
I was looking for email. Where did you locate?
Email and will post response. Thanks. He must get a million emails a week and querious if has time to respond.
Telemark
5 year old buck +
I will paint it on next time too. The diesel ruined a rubber o-ring in my sprayer.
WOW, 20 min to respond. I am shocked!
Hello Rick,
We have not had a problem when temperatures are in the mid- to upper 20s. Of course, the squirt bottles are continuously moving as you go from tree to tree. That said, I don’t recall doing FSI work when the temperature is below that, assuming there would be problems with freezing. I imagine you could replace water with a light oil, but I have not tried that, so I cannot say for sure. Sorry I can’t be more specific. If you try something else, let me know how it goes. I would be interested to hear. Thanks—
Craig
Craig A. Harper
Professor and Extension Wildlife Specialist
School of Natural Resources
TreeDaddy
5 year old buck +
which is why i buy my 4 gal backpack sprayers at harbor freight
They will last longer if you rinse them well after each use
bill
I have been through countless styles of bottles and pump sprayers. I manly buy the heavy duty HD gray sprayers. Buy 6 at a time. When steppin and fetching solo the paint brush is doomed for mess and spilling. If one person of teams job is paintbrush would be OK. But setting down on ground while running chainsaw will spill. Number one best way of applying herbicide is using a squeeze bottle with long spout like at old fashion fast food joints. Reason I don't like is uses twice as much herbicide but probably good thing.
omicron1792
5 year old buck +
I’ll use squirt bottles like dawn dish soap comes in.
Telemark
5 year old buck +
I always rinse my sprayers for storage. I didn't rinse the diesel out because I was going to spray more throughout the next few days. The rubber swelled up and broke the seal in less than 24 hours.
I will use the paintbrush on buckthorn and honeysuckle. For drill and squirt or cut stump I use a squirt bottle, either the ones from the restaurant supply or the ones Tordon comes in.
I will use the paintbrush on buckthorn and honeysuckle. For drill and squirt or cut stump I use a squirt bottle, either the ones from the restaurant supply or the ones Tordon comes in.
Do you find tordon to thick for anything but cut stump? Thought about adding diesel because works best for black locas.