Homemade Weed Killer with Vinegar, Dawn, and Epsom Salt

Are you tired of battling stubborn weeds that threaten to overpower your garden? Commercial weed killers may seem like a convenient solution, but they often come with a hefty price tag and potential harm to the environment. Fortunately, there’s a safer, more cost-effective alternative – homemade weed killer. This article will explore the powerful combination of vinegar, Dawn dish soap, and Epsom salt to create a natural weed killer.

Homemade Weed Killer
Homemade Weed Killer

What are Weeds?

Before we dive into the world of homemade weed killers, it’s essential to understand the nature of weeds and why they pose a challenge to gardeners.

Weeds are simply plants that grow where they are not wanted, often competing with desired plants for essential resources like nutrients, sunlight, and water. They can quickly spread and take over your garden if left unchecked.

Common types of weeds include dandelions, crabgrass, and bindweed, each with its own unique characteristics and growth patterns.

Why Choose Homemade Weed Killers?

While commercial weed killers are readily available, they often contain chemicals that can be harmful to the environment, pets, and even humans.

These chemicals can leach into the soil, contaminate water sources, and disrupt the delicate balance of ecosystems.

Homemade weed killers offer a safer alternative, as they are typically made from natural ingredients that are less harmful to the environment. Additionally, they are often more cost-effective, allowing you to save money while maintaining a beautiful garden.

Homemade Weed Killer: The Ingredients

Let’s take a closer look at the key ingredients that make homemade weed killers effective:

1. Vinegar

Vinegar is a versatile household ingredient that can be found in most kitchens. When it comes to weed control, it’s the acetic acid in vinegar that does the trick.

Acetic acid acts as a desiccant, causing the plant’s cells to dry out and ultimately leading to its demise.

The acidity of vinegar can vary, with household vinegar typically having a 5% acetic acid concentration.

While this concentration can be effective against smaller weeds, using a higher concentration, such as horticultural vinegar with a 20% acetic acid concentration, can be more effective against larger or more stubborn weeds.

2. Dawn Dish Soap

Dawn dish soap, a popular brand of dishwashing detergent, is a surprising but essential ingredient in homemade weed-killer recipes.

The dish soap acts as a surfactant, which helps the weed killer adhere to the plant’s leaves and penetrate its waxy surface. By reducing the surface tension of the liquid, the dish soap allows the vinegar and other ingredients to spread more evenly and effectively.

3. Epsom Salt

Epsom salt, also known as magnesium sulfate, is a mineral compound that contains magnesium, sulfur, and oxygen. While it is commonly used as a bath salt or as a remedy for muscle aches, it can also play a role in weed control.

When applied to weeds, Epsom salt acts as a desiccant, similar to vinegar, by drawing moisture out of the plant’s cells and causing it to wither and die.

Additionally, some gardeners believe that the magnesium in Epsom salt can help improve soil fertility and promote healthier plant growth.

The Recipe

Now that we understand the science behind the ingredients, it’s time to mix them together and create your homemade weed killer. Here’s a simple recipe to get you started:


  • 1 gallon of white vinegar
  • 1 cup of Epsom salt
  • 1 tablespoon of Dawn dish soap


  1. In a large container or sprayer, combine the white vinegar, Epsom salt, and Dawn dish soap.
  2. Stir or shake the mixture vigorously to ensure that all the ingredients are thoroughly mixed.
  3. Your homemade weed killer is now ready to use.

Application Tips

To maximize the effectiveness of your homemade weed killer, consider the following tips when applying it to your garden:

  • Timing: Choose a sunny day for application, as the sunlight helps to enhance the weed killer’s efficacy. Aim for a day when rain is not expected for at least 24 hours, as rainfall can dilute the solution and reduce its effectiveness.
  • Coverage: Ensure that you cover the entire weed, including the leaves and stems, with the weed-killer solution. Thorough coverage is essential to ensure that the weed absorbs the mixture and experiences its herbicidal effects. Be cautious not to spray the solution on desirable plants, as it can harm them.
  • Safety Precautions: When applying the weed killer, it’s important to protect yourself by wearing gloves, goggles, and long sleeves. This will minimize the risk of skin or eye irritation. Keep children and pets away from the treated areas until the solution has dried.


One of the advantages of homemade weed killers is their rapid action. After applying the vinegar, Dawn dish soap, and Epsom salt mixture to the weeds, you can expect to see visible effects within a few hours.

The weeds may start to wilt, turn brown, or show other signs of distress. However, it’s worth noting that the effectiveness of the homemade weed killer can depend on several factors, including the type of weed, its size, and its overall health.

While it is effective against many common garden weeds, larger or more established weeds may require multiple applications for complete eradication.

Precautions and Considerations

While homemade weed killers are generally considered safer than their commercial counterparts, it’s still important to exercise caution when using them. Here are a few precautions and considerations to keep in mind:

1. Selective Application

Homemade weed killers are non-selective, meaning they can harm any plant they come into contact with.

Take care to avoid spraying the solution on desirable plants, as it can cause damage or even kill them. Consider using a shield or barrier to protect neighboring plants during application.

2. Soil Impact

The salts present in the homemade weed killer, particularly Epsom salt, can accumulate in the soil over time.

This accumulation can affect the soil’s nutrient balance and potentially harm plants. If you plan to use the homemade weed killer regularly, consider monitoring your soil’s nutrient levels and taking steps to restore balance if necessary.

3. Environmental Considerations

While homemade weed killers are generally considered environmentally friendly, it’s important to be mindful of their impact on the ecosystem.

Avoid applying the weed killer near bodies of water or areas where runoff can occur, as the solution can harm aquatic life.

Additionally, consider using organic mulch or other natural weed control methods in conjunction with the homemade weed killer to maintain a healthy and sustainable garden.

Alternatives and Additions

If you’re looking to enhance the effectiveness or customize your homemade weed killer recipe, consider these alternative ingredients or additions:

  • Lemon Juice: Adding a small amount of lemon juice to the mixture can help increase the acidity, making it more effective against certain types of weeds.
  • Salt: Some gardeners choose to add table salt or rock salt to their homemade weed-killer recipes. However, it’s important to note that excessive salt can have detrimental effects on soil health and long-term plant growth, so moderation is key.
  • Essential Oils: Certain essential oils, such as clove oil or citrus oil, are believed to have herbicidal properties and can be added to the mixture for added potency. However, it’s important to research the specific essential oils and their concentrations before using them, as some oils can be harmful to plants or animals in high doses.

Troubleshooting Common Issues

Despite your best efforts, you may encounter some challenges when using homemade weed killers. Here are some common issues and possible solutions:

  • Weeds Not Responding: If you find that certain weeds are not responding to the homemade weed killer, they may be particularly hardy or have deep root systems. In these cases, consider increasing the concentration of vinegar or applying the solution more frequently to overcome their resilience.
  • Regrowth: Some weeds may show signs of regrowth after initial treatment. In these cases, it may be necessary to manually remove the remaining weed or apply the homemade weed killer again to ensure complete eradication.
  • Sprayer Clogs: If your sprayer becomes clogged during application, it may be due to residue from the mixture or debris from the weeds. Clean the sprayer thoroughly between uses to prevent clogs and ensure even application.


Here are answers to some frequently asked questions about homemade weed killers:

Q: Can I use this homemade weed killer on my lawn?

A: While the homemade weed killer can be effective against certain lawn weeds, it is important to exercise caution. The solution is non-selective and can harm desirable grasses as well. Consider spot-treating individual weeds rather than applying the solution to the entire lawn.

Q: Can I use this homemade weed killer on cracks in my driveway or sidewalk?

A: Yes, the homemade weed killer is suitable for use on cracks in pavement, as it can help control weeds that may grow in these areas. Take care not to overspray onto surrounding vegetation.

Q: Is the homemade weed killer safe for pets and children?

A: Once the solution has dried, it is generally safe for pets and children to be in the treated area. However, during application, it is recommended to keep them away to prevent accidental exposure.

Q: How long does the homemade weed killer last before losing its effectiveness?

A: The homemade weed killer is most effective when used immediately after preparation. While it may retain some efficacy for a short period, it is best to mix a fresh batch as needed for optimal results.


By harnessing the power of vinegar, Dawn dish soap, and Epsom salt, you can create a homemade weed killer that offers an eco-friendly alternative to commercial herbicides. Happy gardening, and may your garden flourish while weeds wither away!

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