How Long Does It Take For Bleach To Kill Weeds

If not kept under control, weeds and grass quickly grow around the home in any areas they can find. Most notable are gravel driveways and gaps between pavers or throughout the yard. While herbicides can control weeds, a homemade weed killer such as bleach can be effective when used correctly.

If you use it wrong or too much, you can damage wildlife, and it can have other serious environmental effects. So, you need to more about killing weeds with bleach.

In this quick guide, you can find out will bleach kill weeds without damaging the surrounding soil and harming local wildlife. By the end, you’ll see how you can use this hazardous chemical and use bleach, kill weeds and cause no harm to your desired plants. (Learn How Do You Kill Weeds In Bahia Grass)

Bleach kill weeds

Does Bleach Kill Weeds?

Weeds thrive in flower beds, vegetable gardens, between pavers and stepping stones, and, most irritating, between cracks in walkways and driveways.

This raises the question of whether or not bleach kills weeds permanently.

  1. Undiluted bleach will permanently kill weeds growing through cracks and fissures in your driveway, patio, or walkways.
  2. Allow 2 to 3 days for undiluted bleach to spray.
  3. Existing weeds will be killed at the root, and new ones will not grow because of the solution.

They will die if you mistakenly spray weeds, grass, flowers, or other vegetation with bleach.

How does bleach kill weeds?

Bleach raises the soil PH, making it difficult for plants to survive. In addition, bleach denatures plant cells, causing leaves to turn white, wither, and die.

In locations where no plants should grow, bleach can control weeds.

Bleach should never be used on or near flowers, vegetables, or lawn grasses.

Cover surrounding plants with plastic sheeting to prevent accidental exposure to chlorine bleach. Likewise, using large amounts of bleach near a storm drain or body of water will harm aquatic life.

How to Use Bleach Safely

Pour undiluted bleach over the weeds while wearing waterproof gloves. One cup will kill all vegetation in a 6-by-6 square in most soils.

The weeds will turn brown and die in two to three days. After that, you can either pull them up or let them decay.

If you wish to grow more plants later, rinse the soil with plenty of water to remove the bleach.

Alternatively, you can eliminate pesky weeds without affecting the pH of the soil by using a spray bottle. But, first, spray undiluted bleach on the weeds.

The chemical evaporates in a week, allowing other plants to thrive.

Tips Using Bleach to Kill Weeds

Safety Tips Using Bleach to Kill Weeds

  • Most plants, weeds, and insects are killed by bleach.
  • Before you spray, put on safety gloves and eye protection.
  • Use caution around children and pets until the fumes have passed.
  • To prevent mistakenly spraying other plants, use on a calm day.
  • Avoid using near water sources or in aquatic environments.
  • Avoid using near desirable plants, lawns, or edible crops.
  • Bleach should not be mixed with other chemicals.

How To Use Bleach To Kill Weeds

When using bleach as a weed killer, you quickly discover that it isn’t a typical weed killer like commercial weed killers. Unlike regular herbicides, it doesn’t leave roots intact when you apply bleach. (Learn How To Get Rid Of Pond Weeds)

Bleach contains concentrated amounts of chlorine, and in high concentrations, it will burn and kill plants because of its highly acidic pH.

Here’s how to use bleach to kill weeds and grass:

  1. Pour a garden spray pump halfway with undiluted bleach.
  2. Directly on the weeds in your yard, between pavers, and driveways, spray the bleach.
  3. Repeat the spray on weeds and grass that haven’t died after 2-3 days.
  4. To maintain the yard neat, pull out the dead weeds.
  5. Pro tip: If you sprayed crabgrass, dandelions, creeping charlie, horsetail, or wild onion with a diluted bleach solution, you might need to repeat the application 2-3 times to kill some stubborn weeds.

Be sure you wear gloves as bleach, when undiluted, is corrosive and can burn the skin.

Does Bleach Kill Weeds Permanently?

Household bleach can kill weeds in pavements, pavers, and gravel driveway.

Chlorine bleach has two plants on plant and weed growth. For starters, sodium hypochlorite overloads the plant’s salt system.

While chlorine is an essential component of soil, too much of it can induce chlorine toxicity.

Concentrated chlorine bleach has a pH of 11, which implies it significantly raises the pH of the soil.

High pH levels prevent the absorption of minerals like calcium, iron, and magnesium, which are necessary for plant growth.

Plant leaves turn brown and scorched because of salt-clogged channels and insufficient nutrients, and the plants may lose all of their foliage.

The soil will no longer be suitable for planting for that season until bleach levels are diluted and it returns to the normal pH levels needed for soil health.

Homemade Weed Killers

Alternative Homemade Bleach Weed Killers

When using bleach as a weed killer, it is better on smaller invasive weeds than on larger or invasive weeds in areas around other plants or around areas of water where it could harm aquatic life and ground water.

Areas such as a gravel driveway are suited to kill weeds permanently, as you will always want to kill weeds growing and nothing else. (Learn How To Get Rid Of Pokeweed)

Bleach & Dish Soap

  1. Mix 1 cup of water and 1 cup of Clorox together.
  2. Combine the ingredients with 1 tablespoon of dish soap.
  3. Pour a plastic garden sprayer halfway with the solution.
  4. To kill weeds and grass, spot-spray the solution on weeds in your yard, driveways, walks, and gravel areas and let it sit for 2-3 days.

Bleach & Vinegar Solution

Vinegar is an excellent weed killer, mainly when used undiluted.

  • To make a more powerful homemade herbicide, combine it with bleach.
  • Spray household vinegar directly on weeds between pavers and driveways to kill and prevent weeds from sprouting.
  • Follow up with a gentle bleach spray to ensure that the weeds are permanently dead.

Note: Do not mix the two liquids together.

You can add a couple of drops of dawn dish soap to act as a surfactant, thus keeping the vinegar solution sticking to the weeds’ leaves.

Where To Use Bleach Weed Killer?

  • Weeds can grow between the pavers. Bermudagrass is a weed that can be challenging to eradicate.
  • If they grow between the pavers, broadleaf weeds can be pulled up with a weed picker or by hand.
  • Also, consider Clorox. Pouring Clorox concentrated bleach between pavers can kill grass and weed vegetation growing.
  • Weeds thrive on driveways and walkways.
  • Pouring undiluted bleach over all the weeds will help eliminate old roots from driveways and sidewalks.
  • However, certain dead weeds are painful to handle. So, pull them out with any garden tool.
  • After adding bleach, soil conditions here won’t be suitable for anything to grow.
  • Be extra careful when spraying bleach. The wind may blow it onto other people or plants and affect groundwater when in large amounts.
  • Over one application of bleach may be needed to exterminate weeds effectively.

Does bleach kill weeds permanently?

Bleach is an effective herbicide. Most small weeds will be killed by bleach. It won’t work on larger or more invasive weeds, such as ivy, brambles, or knotweed.

If you apply it to soil areas, the soil conditions won’t be suitable to grow anything for many months. (Learn How To Get Rid Of Chickweed)

Ensure you always wear safety gloves and eye protection to avoid injury and ensure the area is well ventilated.

Prevent accidental spraying by using on a calm day, and you can effectively stop weeds from growing.

How Long Does It Take For Bleach To Kill Weeds

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