How to Remove Lichen From Stone

Are you looking for a way to remove lichen from stone? Lichens are an organic growth that can damage the appearance of your stones.

The age-old battle between lichen and stone has been waged throughout history. Lichen, a fungus that thrives in moist climates, is often found covering the surfaces of stones with its signature bright green coloring.

How to Remove Lichen From Stone

Whether it’s bricks on your home or gravestones in an old cemetery, lichen can be both unsightly and dangerous to the integrity of the stone itself. Fortunately, there are easy ways to remove lichen from stone without damaging its surface, so you can keep it looking beautiful for years.

In this blog post, we’ll discuss how to remove lichen from stone, including brick, granite, sandstone, and more!

What Will You Need?

To successfully remove lichen from stone, you’ll need a few supplies. These include:

  1. A stiff brush like a hard bristled wire brush or an old toothbrush
  2. Protective gear such as gloves and eyewear
  3. Mild detergent
  4. White vinegar or other acid based cleaner
  5. A garden sprayer (optional)
  6. Water

Now that you have the necessary materials follow these steps to remove lichen from your stone:

10 Easy Steps on How to Remove Lichen From Stone

Step 1. Use Safety Gear:

Put on your protective gear before beginning the process, especially when using an acid based cleaner. You can also wear a mask to protect your lungs from any particles. It will also prevent you from getting any chemicals in your eyes.

Step 2. Remove Excess Dirt:

Use a stiff brush to loosen any dirt or debris from the stone’s surface. Be careful not to scrub too hard, as this can cause damage. Otherwise, brush away any debris until the stone’s surface is clean.

 Use a Stiff Brush 
to Loosen Any Dirt

Step 3. Mix Detergent and Water:

Create a mild detergent in a bucket by mixing warm water and a mild detergent such as dish soap. Ensure the detergent does not contain any bleach or other harsh chemicals. Because the detergent is mild, it will not damage the stone but rather act as a cleaning agent to help remove any dirt or debris.

Step 4. Apply Detergent Mixture:

Saturate the lichen with this soapy mixture using a garden sprayer or by pouring it directly onto the lichen covered area. Another option is using a soft bristle brush or sponge to spread the soapy mixture. It Is important to saturate the lichen so it can be removed more easily.

Step 5. Wait 10 to 15 Minutes:

Allow the soapy mixture to sit on the lichen for 10-15 minutes. This will help to loosen the lichen from the stone, making it easier to remove. Keep the mixture from sitting for too long, however, as it may damage the surface of your stone.

Step 6. Scrub Away Lichen:

Using your stiff brush, scrub away the softened lichen carefully. Try not to damage the stone’s surface as you do this by applying pressure gently and in circular motions. Be sure to rinse off any dirt or debris that is loosened during this step.

Step 7. Rinse Surface with Water:

Rinse the area thoroughly with water until all traces of detergent have been removed. This will help prevent any residue from remaining on the surface. Keep in mind that some residue may remain, however, it will be minimal.

Step 8 . Use an Acid-Based Cleaner:

Using a Dash of Vinegar

If any lichen remains after steps 1 through 7, try using a dash of vinegar or other acid-based cleaners to remove it. Apply the cleaner in the same manner as you did with the detergent and scrub away any remaining lichen with a brush. Always follow the instructions carefully when using an acid-based cleaner, and wear protective gear.

Step 9. Rinse Again:

Rinse the surface again with water once to ensure all traces of cleaning solutions have been removed. And that’s it! You’ve now successfully removed lichen from your stone without damaging its surface. With simple supplies and a few easy steps, you can keep your stones looking beautiful for years to come!

Step 10. Protect Your Stone from Future Lichen Growth:

After removing lichen from your stone, you can help keep it away by regularly cleaning the surface with soap and water. You can also apply a sealant to the stone to provide extra protection from future lichen growth. Remember, preventive measures are the best way to keep your stone looking beautiful for years.

By following these steps, you can successfully remove lichen from your stone without damaging its surface. With proper care and maintenance, your stones will look beautiful for years!

5 Additional Tips and Tricks

1. Invest in a good quality stone sealant to prevent future lichen growth.

2. Keep your stone surfaces clean with regular soap and water washes.

3. If you need help deciding what kind of cleaner to use, consult a professional for advice.

4. Use protective gear when using an acid-based cleaner, such as gloves and eyewear.

5. Use a pressure washer if the lichen is too hard to remove with a brush.

Following these simple steps and tips, you can easily remove lichen from stone without damaging its surface! Try it out today and see the difference in your stones’ appearance!

   Invest in a Good 
Quality Stone Sealant

5 Things You Should Avoid

  1. Avoid using a stiff brush on soft stones, which can cause damage.
  2. Don’t use harsh chemicals or cleaners, which may damage the stone surface.
  3. Don’t allow the detergent and acid-based cleaner to sit on the stone surface for too long.
  4. Never scrub too hard when removing lichen, as this can cause damage to the stone’s surface.
  5. Avoid using a pressure washer if possible, as it can damage softer stones such as sandstone or limestone.

By avoiding these common mistakes, you’ll be able to achieve the best results when removing lichen from your stone surfaces!

What is the Best Chemical to Remove Lichen?

The best chemical to remove lichen is white vinegar or other acid based cleaner. Vinegar is a safe, effective way to kill lichen and can be used with detergent for an even more powerful cleaning solution. Always wear protective gear when using any acid-based cleaner, such as gloves and eyewear. Also, remember to rinse the vinegar off after use so it doesn’t cause any damage to the stone surface. With these simple steps, you can easily remove any lichens from your stones!

By following these steps and tips, you can get your stones looking like new again without damaging them! Don’t let unsightly lichens ruin the beauty of your home—try these steps to remove lichens from stone today!

What Causes Lichen Growth?

Lichen growth is caused by air pollution, moisture, and other environmental factors. It can grow on any stone or rock surface, including brick, concrete, and flagstone. Lichens are an example of a symbiotic relationship between fungi and algae.

Lichen Growth is Caused 
by Air Pollution Moisture

They form when spores from the fungi land in wet conditions on surfaces with little to no wind. If these conditions persist, lichens will begin to form on the surface of your stones.

Additionally, lichens can form due to inadequate care and maintenance. It is important to regularly clean your stone surfaces with soap and water, as well as apply a sealant to protect the stones from future lichen growth.

By understanding the causes of lichen growth, you can take preventative measures to avoid it in the first place! Keep your stones looking beautiful for years by following these simple steps and tips.

Is Lichen Harmful to Humans?

No, lichen itself is not usually harmful to humans. The main problem with lichens is that they can cause discoloration and damage to stone surfaces over time if left untreated. Additionally, some species of lichen have been known to produce toxins that may be hazardous if ingested or inhaled in high concentrations.

It is best to take preventive measures to avoid lichen growth, such as regularly cleaning your stones with soap and water and applying a sealant for extra protection. If you are dealing with a lichen problem, follow the steps outlined earlier in this article for safe removal without damaging your stone.

By following these tips and tricks, you can keep your stone surfaces looking beautiful and clean – without harming humans or pets!


After reading this blog, you should have a better understanding of how to remove lichen from stone. Keeping in mind that the most important thing is safety, be sure to take all appropriate precautions when attempting to remove lichen. Remember always to wear goggles and gloves to protect yourself, and make sure your work area is well ventilated.

Additionally, it’s important to remember that whatever method you use must be repeated; lichen can come back if the right conditions exist on or around the stone. Be sure to re-apply any products used to stop further regrowth of the lichen regularly, and enjoy a happy and lichen-free life!

Finally, when all else fails, it may be time for an expert professional to tackle your problem—so don’t hesitate to call one if needed.

Safely removing lichen from stone can take some effort, but with patience and determination, you can achieve it successfully!

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