How to remove walnut stains from concrete


If you have concrete surfaces around the house particularly a patio and a walnut tree nearby, you will surely face unappealing stains now and then. In another scenario, your concrete driveway can be marred by walnut stains. Luckily, there are methods that you can use to get rid of these stains. Read further to learn ways on how to remove walnut stains from concrete effectively.

Steps on how to remove walnut stains from concrete

Walnut stains can be undesirable on concrete patios or driveways. Let’s take a look at the steps on how to remove walnut stains from concrete.

  • Wear protective gear such as rubber gloves, goggles, and boots before handling chlorine.
  • Moisten the stained area on the concrete with a garden hose. Sprinkle granular chlorine on the stains. Lightly moisten by misting the chlorine with water. Let it soak for up to 5 minutes. 
  • Prepare a solution by mixing 1/3 cup of liquid dish soap and 2/3 cup of borax in a gallon of hot water. Stir the solution thoroughly.
  • Scrub the site of the walnut stains with the liquid solution using a stiff brush for 1-2 minutes. Rinse the area thoroughly. The walnut stains should be gone at this point. Allow the concrete to fully dry under the sun.
  • Apply a layer of concrete sealant to the areas that are susceptible to staining. Carefully follow the instructions on the packaging. 

How to get rid of walnut stains on clothes

Even if you are careful, your clothes might end up with fresh walnut stains. Luckily, there are methods that you can use to deal with this type of stain.

  • Rinse the garment in cold water. 
  • Pour 2-3 teaspoons of dishwashing liquid on the stained area. Add 4 drops of vinegar on the site. Rub the stained area to work the dishwashing liquid and vinegar into the stain. 
  • Once you are sure that you have cleaned the site, put a paper towel on the stain, and wait for 5-10 minutes. 
  • Rinse the garment thoroughly. If possible, use running water to completely rinse the garment. 

Hydrogen peroxide is another substance that you can use to remove fresh walnut stains. Simply moisten the stained area with hydrogen peroxide and wait for a while. Make sure that your garment will not be damaged. 

Detergents that contain bleaching agents can also be used to get rid of fresh walnut stains. Prepare a mixture by combining a teaspoon of bleach with a spoonful of water and dab on the site. After applying, wipe the site with a clean cloth saturated with a vinegar-water solution. Rinse thoroughly with clean water. 

How do you remove black walnut stains?

When dealing with black walnut stains, it must be treated right away after staining. The older the stain, the harder it is to remove. Removing the stain must be done before washing any washable garments. The stains that have been washed and allowed to dry are almost impossible to remove.

  • Sponge on the stained area using water.
  • Prepare a solution by mixing a few drops of dishwashing soap and white vinegar in water. 
  • Saturate a towel or cloth with the solution and cover the stain. Let it sit for up to 5 minutes. If the fabric is durable enough, tap with a spoon or brush.
  • Flush the site with water.
  • Repeat the process until no more stain is removed. 
  • You can bleach the garment to get rid of any lingering traces of the stain. Prepare a solution by mixing a teaspoon of bleach with a tablespoon of water. Apply and let it sit for only 2 minutes.
  • Rinse the site with water after every application of bleach.
  • Prepare a solution by mixing 1/3 cup of white vinegar and 2/3 cup of water. Apply this solution to get rid of excess chlorine and flush thoroughly with water. 

How long do walnuts stains last on skin?

If you accidentally end up with walnut stains on your skin, you might want to try out some removal methods right away. When walnut stains are left for a long time on your skin, the harder it will be to remove. Generally, when not dealt with right away, it might take some time to completely remove the stains on your skin. 

For those who are working with walnuts, it is recommended to wear rubber gloves to prevent staining. When picking up walnuts off the ground or if you handled them during woodworking projects, you could end up with an unsightly yellow stain. If left untouched, the stain can linger around for days. It will fade away on its own, but you do not want to wait that long. 

Does chlorine remove walnut stains from concrete?

Once you discover walnut stains on concrete surfaces, there are removal methods that you can try such as granular chlorine. Granular chlorine is the ideal option to remove walnut stains from concrete surfaces. Although designed and used for swimming pools, granular chlorine also works like a heavy-duty cleaner. Just remember that chlorine is a harmful and corrosive chemical. With this in mind, use proper protective gear when handling it such as rubber gloves, boots, and eye gear.

  • Moisten the stained area with a garden hose, making sure that the entire stain is covered. 
  • Apply the chlorine granules to the moistened area. With a spray bottle, lightly mist the granules but take care not to over-water. The chlorine will quickly get to work. Let it sit for up to 5 minutes.
  • While waiting, fill a bucket with a gallon of hot water. Pour 4 tablespoons of Dawn dish soap and 2/3 cup of borax. Mix them thoroughly. After 5 minutes, soak a brush into the bucket and scrub the stained area vigorously. Add more of the liquid solution as needed. The longer you scrub, the more effective the stain will be removed. Rinse the concrete surface thoroughly. 
  • At this point, the walnut stain should be gone. If a trace lingers, allow the site to dry thoroughly. Repeat steps 1-4 until the stain is completely gone. 

Final thoughts

If you want your concrete driveway or patio to stay clean and free from walnut stains, you must use the right cleaning technique. With the methods described on how to remove walnut stains from concrete, you can readily deal with the stains and restore the clean appearance of the concrete surface. 

teammichael

Michael René, consultant, is the leading stain removal expert in Denmark. Read about him and the rest of the team here

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