Internet recipes for weed killers using household products mention vinegar as the main ingredient. But regular vinegar does not work. Finally I found a reference to 5% super concentrated vinegar. But no one knows what I am talking about in the bigbox stores or my local supermarket. I want to use a green product, but can't find the right ingredients.
By Linda
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With canning time coming up check the concentration of the vinegars. Some are sold as vinegar and some as Pickling Vinegar which is usually higher in acetic acid.
I have no idea if it would work or not, but could you simmer some vinegar to reduce the volume, thereby increasing its concentration?
The dark colored vinegar is stronger than the white which is stabilized at 5% but if you put vinegar full strength to kill weeds you will also kill the trees roots that go under it. be careful with vinegar.
The 4 or 5 % vinegar sold in gallons at the grocers does work. Give it a chance and perhaps a second hit, maybe even a third hit. Do not dilute. Sometimes up to a week of waiting. It even killed my bamboo because i was persistent. Bamboo was cut short and i soaked the roots.
Five percent has always worked for me to kill weeds. I use it around my veggie garden to keep the weeds from growing into the fence. I have to fence it or the rabbits chew everything off.
I live in Texas and HEB grocery carries both 5 and 9% in gallon size. I would imagine any grocerer could special order the 9% if you make a request.
It should tell you the concentration of acid in the vinegar on the bottle. My regular white vinegar is 5% and the balsamic is 6%. I think 5% is standard for white vinegar.
You are looking for 9% to 15% vinegar that is sold in some nurseries that carry organic gardening supplies. Sometimes it's referred to as agricultural vinegar. You probably won't find it at a chain store. Grocery stores usually don't have it.
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