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Old 06-23-2019, 07:22 AM
 
Location: Dark Side of the Moon
238 posts, read 83,236 times
Reputation: 723

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I just tried a DIY Herbicide yesterday, and I'm in love. Please share any recipes that you love, and I'll post mine:

Weed spray:

1 gallon white vinegar
1 cup salt
1 T natural dish soap (I use a costco brand)

All mixed in the sprayer and applied to weeds on a sunny day. All weeds are gone, even in grassy areas--without damaging grass.
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Old 06-23-2019, 12:53 PM
 
Location: The Driftless Area, WI
3,569 posts, read 1,386,040 times
Reputation: 7981
A little basic chemistry: the pH of vinegar is 2.5-- that's pretty acidic for plants to grow in, but by adding the salt (NaCl) the concoction has been turned into a sodium acetate buffer solution--pH 6.5- perfect for most weeds.


The solution worked because it essentially "salted the field"- a dirty trick used by guys like Alexander & Hannibal to permanently starve their enemies.


Better to just spray the vinegar on the weeds you want to eliminate. Frequent use of the salt may cause long term problems.


The soap is used as an emulsifying agent to help poisons penetrate the wax coatings on leaves (theoretically- it may not really work).


A home made brew like this is great for small, urban type gardens where the over-spray of commercial herbicides is hard to control and may cause unwanted damage.
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Old 06-23-2019, 01:12 PM
 
Location: Floribama
15,872 posts, read 32,948,757 times
Reputation: 15143
I’m always amazed at people who are so afraid of glyphosate, yet are perfectly fine with pouring salt everywhere.
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Old 06-23-2019, 01:15 PM
 
Location: LI,NY zone 7a
2,217 posts, read 1,322,324 times
Reputation: 2703
Quote:
Originally Posted by guidoLaMoto View Post
A little basic chemistry: the pH of vinegar is 2.5-- that's pretty acidic for plants to grow in, but by adding the salt (NaCl) the concoction has been turned into a sodium acetate buffer solution--pH 6.5- perfect for most weeds.


The solution worked because it essentially "salted the field"- a dirty trick used by guys like Alexander & Hannibal to permanently starve their enemies.


Better to just spray the vinegar on the weeds you want to eliminate. Frequent use of the salt may cause long term problems.


The soap is used as an emulsifying agent to help poisons penetrate the wax coatings on leaves (theoretically- it may not really work).


A home made brew like this is great for small, urban type gardens where the over-spray of commercial herbicides is hard to control and may cause unwanted damage.
There should be a Top comment on this forum, b/c certainly this is one. Well done, guidoLaMoto!
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Old 06-23-2019, 01:31 PM
 
12,048 posts, read 17,082,769 times
Reputation: 13646
Vinegar kills EVERYTHING. I know first hand. How you managed to kill weeds and not grass with it - is mystery to me. Now, I know what I am talking about as I used vinegar solution for years. It's basically RoundUp, just without its toxicity.
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Old 06-23-2019, 01:32 PM
 
Location: Dark Side of the Moon
238 posts, read 83,236 times
Reputation: 723
Lighten up, guys: I'm just looking for other recipes I can use.
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Old 06-23-2019, 02:52 PM
 
Location: Old Hippie Heaven
20,593 posts, read 9,297,011 times
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Plain boiled water straight for the tea kettle works reasonably well. Tedious to apply to a large area though.

But I agree, vinegar on its own works reasonably well, and can be used on larger areas. You should dilute it though, not use it straight from the bottle. Google around for the recommended dilution.

One caveat, since neither boiled water nor vinegar is a longterm solution, you will have to apply every few weeks. They don't result in a maintenance free yard.
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Old 06-23-2019, 03:32 PM
 
Location: too far from the sea
21,425 posts, read 20,415,113 times
Reputation: 37544
I got rid of moss growing between the bricks in my patio with salt solution. It was a long time ago but I do remember it worked.
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Last edited by in_newengland; 06-23-2019 at 04:20 PM..
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Old 06-23-2019, 07:03 PM
 
Location: Old Hippie Heaven
20,593 posts, read 9,297,011 times
Reputation: 12467
Quote:
Originally Posted by in_newengland View Post
I got rid of moss growing between the bricks in my patio with salt solution. It was a long time ago but I do remember it worked.
It worked because it ruins the soil for new plants. Sometimes for a long time, depending on rainfall or irrigation.

Whether or not to use it depends on whether you want to use the soil to grow something else. If you don't, then yes, it's an inexpensive and easy DIY herbicide.
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Old 06-23-2019, 07:10 PM
 
Location: In the Pearl of the Purchase, Ky
8,033 posts, read 13,483,470 times
Reputation: 33297
Quote:
Originally Posted by in_newengland View Post
I got rid of moss growing between the bricks in my patio with salt solution. It was a long time ago but I do remember it worked.
That's all my mother ever used on their sidewalk and brick patio. Table salt in warm water. Took care of the weeds quick. I asked her how much salt. "I don't know. Just whatever seems right to you". lol
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