Correction — September 7, 2026: The earlier version of this article overstated the safety of a vinegar, salt and dish-soap weed spray near vegetables. I am withdrawing that recommendation and correcting the advice below.
Household ingredients can still damage garden plants
Vinegar can injure foliage it touches, including desirable plants. Burning back leaves does not establish that a perennial weed’s roots are dead. Oregon State Extension describes this contact action and reports that a household vinegar mixture damaged surrounding grass while the targeted thistle returned. Read Oregon State Extension’s explanation.
Salt can harm plants and soil conditions. Its effects do not stop at the weed you intend to treat. University of Minnesota Extension explains salt damage in landscapes.
What I recommend for garden beds
Start with hand weeding or an appropriate mulch rather than assuming pantry ingredients are harmless. Identify persistent weeds so you can choose a method suited to the plant and location. For a difficult infestation near edible crops, ask your local extension service for guidance.
I no longer recommend the recipe or repeated applications described in the earlier article. The claim that heat makes weeds absorb this mixture through their leaves like water was also unsupported.
About the earlier video
The earlier video is retained as context for this correction. Its homemade-spray advice should not be treated as current guidance. Household ingredients are not automatically safe for people, pets, soil or nearby plants.
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