What is the highest concentration of glyphosate weedkiller sold in Ontario (Round Up or other gneneric brands). I know you can get the stuff at 50% in the US. What is the highest here for over the counter hone use?
thanks!
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What is the highest concentration of glyphosate weedkiller sold in Ontario (Round Up or other gneneric brands). I know you can get the stuff at 50% in the US. What is the highest here for over the counter hone use?
thanks!
Not sure of the actual concentration but the farmer's grade is mixed at a 50:1 ratio. 350g/l Regular store bought concentrate used to be mixed at 40:1. The premix is 1/50th the strength of the super concentrate. 7g/l. The concentrate sold now in Ontario is mixed at 20:1 so not near as strong. If you're looking for a strong mix best to talk to a farmer.
Cheers
I'm no pro, but I think most agricultural formulations are 50%. You need a licence to buy them.
You don't need a licence to buy the pre-mixed stuff that is 1% but there are restrictions. I think you have to ask for it (not usually on shelves) and it is supposed to be used only on poison ivy or giant hogweed.
It doesn't work on Japanese Knotweed.....if that is your problem.
Got a lot of things I need to kill.. the problem is, cutting them down doesn't go far enough... I've researched it and herbicides need to be sprayed on stumps. Everything I want to kill suckers... Box elders, Lilacs..etc... i cut them and it' sprouts back up again! even grounding stumps won't get em all... Lilacs are a real PIA.. Don't understand why they are so popular... they look nice for 5 days then look like crap rest of they year and the sucker though my interlock, patio, everywhere...Quote:
Originally Posted by patvetzal
got to befriend a farmer who'd sell me a few gallons of th really strong stuff.. anyone? or I could go to the US. I think they sell the 50% stuff
and my dumb neighbour has box elders all along the fence... they grow through my fence and encroach onto my side...hate those things, too...
If you are painting stumps I'd go with garlon over glyphosate, but glyphosate will work at 50% in a pinch.
Once I get my hand on the strong stuff I am going to try the hack and squirt method.. you take an axe and cut into the wood in a downward direction then spray the tree so they die - roots die and no suckers should emerge.. sometimes a few applications are needed... it's a quick way to kill a lot of young trees
An old farmer friend [now long gone] used to make his own weed/vegetation killer by mixing Gillets Lye, Salt and Strong Vinegar, this concoction killed every thing.
I do not know what ratio he used, but I do know his fence lines were always clear of any type of vegetation.
My farmer buddy gets the 3way
It kills all broad leaf and is a 50 to one mix.hsrd to get without the proper lic