Is home use vinegar effective as a weed killer. - Ask Extension
A Cincinnati Enquirer article advised against using vinegar, salt, and dish soap as a weed killer. I don’t want to use Roundup so I’ve been pullin...
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Is home use vinegar effective as a weed killer. #877228
Asked July 15, 2024, 7:24 AM EDT
A Cincinnati Enquirer article advised against using vinegar, salt, and dish soap as a weed killer. I don’t want to use Roundup so I’ve been pulling weeds in my landscaping. This method is not working because I seldom remove the entire root.
Are there other effective options for killing weeds?
Thank you.
Steve Goforth
Hamilton County Ohio
Expert Response
Thanks for contacting Ask Extension,
The answer to this question will depend upon the weeds you are trying to control. Seedling annual broadleaf weeds can be easily controlled with other herbicides and herbicidally-active natural products, or even with a hoe or other tool. Perennial weeds, established annual weeds, and grasses are more difficult to control. Regardless of the method or product chosen, the cost for removal will be higher than with glyphosate. This will result from higher chemical costs, more applications, or higher labor costs.
Many options are available to control small broadleaf weeds. The best alternative is to prevent the weeds from emerging by using mulches and sanitation practices that prevent the introduction and spread of weed seeds. Preemergence herbicides ( Preen is an example of a preemergence herbicide ) may be used to control annual grasses and small-seeded broadleaf weeds. However, even in the best-managed landscapes, some weeds will germinate and establish. These weeds will need to be controlled, manually or with postemergence herbicides, before they go to seed.
Heat can kill seedling broadleaf weeds. Flame weeding is effective on weeds growing in hardscapes, but should not be used in areas were dry mulch is present.
Several other non-selective herbicides are available for use in landscape plantings. These include: Diquat (Reward™), pelargonic acid (Scythe™), glufosinate (Finale™ and others), and many “natural products” such as vinegar and botanical oils. All of these products have contact-type activity. That means they do not translocate to the roots of treated plants. If applied at the labeled dose and with thorough spray coverage, each of these herbicides will control seedling annual broadleaf weeds. None of these products have residual activity (i.e.: no root uptake and no preemergence weed control) in soils.
Many product formulations containing acetic acid ( vinegar) and various botanical oils are available through commercial distributors. They are effective on seedling annual broadleaf weeds, but only burn the foliage of the perennial weeds, large weeds and grasses. Remember " natural" does not always mean "safe: Most products containing vinegar and natural oils have a higher dermal toxicity than synthetic herbicides and may carry a
" danger" signal word on the label. If you are using these products avoid contact with your skin and eyes and avoid inhaling the spray.
Without glyphosate, controlling perennial weeds will be more difficult and will require a more diversified selection of control options. Perennial grasses can be controlled with selective herbicides (described above). Sedges can be controlled with directed applications of sedge-specific herbicides. Established broadleaf weeds (including woody weeds) may in some circumstances be control with synthetic auxin herbicides. And, manual removal will be part of each weed management plan.
I have found some articles from education sites that might give you some other ideas.
I wish you luck!
https://ohioline.osu.edu/factsheet/hyg-4031
https://henderson.ces.ncsu.edu/2023/09/eco-friendly-herbicides-a-new-era-in-home-weed-control/