Handle with careWorks without power
How it works
Quick facts
- Young weeds
- 5% vinegar
- Established
- 20%+ vinegar
- Best
- hot, dry day
- Kills
- topgrowth only
- 20%+ =
- corrosive
Hazard
Horticultural vinegar at 20% or more causes chemical burns on skin and can permanently damage the eyes; treat it as a corrosive and wear goggles, gloves, and sleeves. It kills only the topgrowth it wets, leaves no residual or pre-emergent control, and roots resprout.
Standard 5 percent household vinegar handles seedlings and newly emerged weeds in their first two weeks of growth and little else. For established weeds in gravel paths, driveway cracks, and fence lines, horticultural vinegar at 20 percent or more is far more effective (a stronger 30 percent exists but is even harsher), yet it is a corrosive chemical that burns skin and can permanently damage eyes on contact, so it demands full protective gear. Either way vinegar is a non-selective contact herbicide: it burns any green tissue it touches but does not travel to the roots and leaves no residue, so it gives no lasting or pre-emergent control and deep-rooted perennials simply regrow.
What you'll need
- White vinegar (5% for seedlings; 20% or stronger horticultural vinegar for established weeds)
- Optional: dish soap as a surfactant
- Water for diluting when a milder solution is wanted
- For strong vinegar: goggles or a face shield, chemical-resistant gloves, long sleeves
Steps
- For young weeds and cracks, fill a spray bottle with undiluted 5 percent white vinegar and add about 1 tablespoon of dish soap per gallon to help it stick to waxy leaves. Spray all leaf surfaces on a warm, dry, sunny day, since heat and sunlight speed the drying, and avoid spraying before rain. Most seedlings brown and wilt within a day. Because the roots survive, expect regrowth and reapply as new leaves appear.
- For established weeds in gravel, cracks, and fence lines, step up to 20 percent or stronger horticultural vinegar with the same surfactant. Put on goggles or a face shield, chemical-resistant gloves, and long sleeves first, since this strength is corrosive and causes skin burns and serious eye injury, and its vapor irritates in heat. Saturate all green tissue. Top growth dies back within a day, but deep-rooted weeds like bindweed and thistle regrow and need two to three repeat treatments about a week apart.
Garden use
See Appendix J, Garden Uses, for the symptom chart, key rates, and cross-recipe cautions.
Warnings
Horticultural vinegar at 20 percent or more causes chemical burns on skin and can permanently damage the eyes; treat it as a corrosive chemical, not a household product, and wear goggles or a face shield, gloves, and long sleeves. Buy an EPA-registered product for proper directions and first aid, and remember that natural does not mean safe. Vinegar kills any vegetation it contacts, so keep the spray off garden plants, lawns, and food crops, and away from ponds and waterways. It gives no residual or pre-emergent control, so seeds that sprout later are unaffected. The acidity lowers soil pH only briefly. Rinse metal sprayer parts after use to prevent corrosion.
Storage and shelf life
Store in sealed HDPE or glass containers in cool, dark conditions. Label all containers clearly with concentration level. Shelf life is indefinite when properly sealed. Best container: sealed glass or HDPE container. Avoid metal (vinegar corrodes all metals). See the Containers section.
Questions this answers
Tap a question for the short answer.
How do I kill weeds with vinegar?
For young weeds, fill a spray bottle with undiluted 5 percent white vinegar plus about 1 tablespoon of dish soap per gallon, then wet every leaf surface on a warm, dry, sunny day. Seedlings brown within a day. Roots survive, so reapply when new leaves show. Established weeds need 20 percent horticultural vinegar.
What strength vinegar kills mature weeds?
Established weeds need horticultural vinegar at 20 percent or more. A 30 percent version exists but is even harsher. Household 5 percent only handles seedlings in their first two weeks. At 20 percent it is a corrosive chemical, so wear goggles or a face shield, chemical-resistant gloves, and long sleeves.
Can I use vinegar weed killer on my lawn or near crops?
No. Vinegar is a non-selective contact herbicide that burns any green tissue it touches, so keep the spray off lawns, garden plants, and food crops, and away from ponds and waterways. It suits gravel paths, driveway cracks, and fence lines.
Should I add dish soap to vinegar weed killer?
Dish soap is optional but helpful. About 1 tablespoon per gallon works as a surfactant so the vinegar sticks to waxy leaves. Use the same addition with 20 percent horticultural vinegar on established weeds.
How often do I reapply vinegar to weeds?
Reapply whenever new leaves appear, since vinegar kills only top growth and the roots survive. Deep-rooted weeds like bindweed and thistle need two to three repeat treatments about a week apart. It leaves no residue, so seeds that sprout later are unaffected.
Keep going
Related to this
Membership · $49.95 per year
There is a lot more behind the lock
Every recipe and resource from the Prepper's Chemical Survival Guide, all six field guides to read here and download, the full audit and logbook, all twelve reference charts, and no ads.
My Manual · included
Build your own field manual
The most useful thing a membership gives you. Save any page on this site, recipes, charts, and whole field guides included. Put them in your order, name it, and print one manual with a cover and contents, or keep it as a PDF that opens with no signal.
- It works when this site does not
- Only your pages
- Anyone in the house can use it
- One current copy, not a pile of printouts
- The house binder
- A copy for the bug-out bag or truck
- A copy for family
- An offline PDF
Stay Ready
New entries, updates, and useful instruction.
Stay one step ahead on your preparedness journey.