How to Clean Lava Rock Landscaping: Simple Steps to Try

how to clean lava rock landscaping

Lava rock is a popular choice for adding a touch of natural beauty to outdoor spaces.

Its unique texture and rich colors create a visually striking contrast, transforming ordinary gardens into captivating landscapes.

However, as time passes, even the most exquisite lava rock landscaping can fall victim to the accumulation of dirt, debris, and the gradual fading of its original vibrancy.

Regular cleaning and maintenance are, therefore, essential to preserve its natural beauty and ensure longevity.

Lava Rock & Dirt

Lava rock, also known as volcanic rock, is formed when molten lava cools rapidly.

It’s porous, lightweight, and available in various sizes and colors, ranging from deep reds to charcoal blacks.

Lava rock is prized for its ability to retain heat, improve drainage, and enhance the overall aesthetics of outdoor spaces.

However, like any outdoor feature, lava rock landscaping requires regular maintenance to keep it looking its best.

Over time, dirt, dust, organic matter, and even weeds can accumulate on the surface, causing the rocks to lose their luster and vibrancy.

Related: How to Clean Algae off Landscape Rocks (Step-by-Step)

Preparing for the Cleaning Process

Before you start cleaning your lava rock landscaping, gather the necessary tools and materials.

With the right tools at hand, getting the job effectively done will be easier.

You’ll need…

black lava rocks for landscaping
  • Garden hose or pressure washer: For rinsing off loose dirt and debris
  • Stiff brush or broom: To scrub the surface of the rocks and remove stubborn stains
  • Mild detergent or natural cleaning solution: Avoid harsh chemicals that could damage the rocks or harm surrounding plants
  • Protective gear: Wear gloves, safety glasses, and a dust mask to protect yourself during the cleaning process

Cleaning Techniques for Lava Rock Landscaping

There are various methods you can employ, depending on the level of dirt and stains.

Let’s explore both dry and wet cleaning techniques to provide you with options that suit your specific needs.

Dry Cleaning Methods

To start, remove loose debris by gently brushing and sweeping the lava rocks.

This process eliminates leaves, twigs, and other surface-level dirt. For larger areas, consider using a leaf blower or compressed air to blow away dust and dirt from hard-to-reach crevices.

Wet Cleaning Methods

For more thorough cleaning, rinsing the lava rocks with water is effective in removing surface dirt.

Use a garden hose or a pressure washer in a gentle setting to avoid damaging the rocks.

If stubborn stains persist, mix a mild detergent with water and scrub the rocks using a soft brush. Be sure to rinse thoroughly to remove any soapy residue.

Related: Decomposed Granite Pros and Cons

Step-by-Step Guide: How to Clean Lava Rock Landscaping

Follow these steps to effectively clean your lava rock landscaping.

how to clean landscaping rocks

Step 1: Clearing the area

Start by clearing the surrounding area of any furniture, plants, or decorative items.

Remove large debris like fallen branches or rocks that may hinder the cleaning process.

Step 2: Rinsing the rocks with water

Using a garden hose or pressure washer set to a gentle spray, rinse the lava rocks thoroughly.

The water pressure should be sufficient to dislodge loose dirt, leaves, and other debris that have accumulated.

Step 3: Using a brush or broom

Once the rocks are damp, take a stiff brush or broom and gently scrub the surface of the rocks.

This will help remove any remaining dirt or grime that the rinsing process might not have eliminated.

Step 4: Treating stains or discoloration

If you notice stubborn stains or discoloration on the lava rocks, you can apply a mild detergent or a natural cleaning solution.

Dilute the detergent according to the manufacturer’s instructions and use a brush to gently scrub the affected areas.

For natural cleaning solutions, vinegar or lemon juice mixed with water can be effective in removing stains.

Be cautious not to use harsh chemicals that may damage the rocks or harm surrounding vegetation.

Step 5: Rinse thoroughly and allow to dry

Once you’ve finished scrubbing, rinse the rocks thoroughly with water to remove any traces of cleaning agents.

Ensure that all the soap or cleaning solution is thoroughly rinsed off. Allow the rocks to air dry completely before returning any furniture or plants to the landscaping area.

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Removing Mold, Moss, and Algae

how to clean lava rock

Mold, moss, and algae can detract from the beauty of lava rock landscaping and may pose potential risks.

Understanding the causes and implementing appropriate removal methods is important.

Organic Methods

Consider using organic solutions like vinegar, hydrogen peroxide, or baking soda to eliminate these growths. These options are safe for both the environment and your plants.

Chemical Methods

If organic methods are insufficient, there are chemical solutions available specifically designed for removing mold, moss, and algae.

However, exercise caution when using these chemicals and carefully follow the instructions to prevent any adverse effects.

Safety Considerations when Cleaning Lava Rock Landscaping

Prioritize safety to prevent injuries and accidents when cleaning lava rock landscaping. Keep these tips in mind.

Protective Gear

Wear gloves, goggles, and suitable footwear to protect yourself from cuts, abrasions, and exposure to cleaning agents.

Chemical Safety

When using chemical cleaners, follow the instructions carefully, and ensure proper ventilation. Store cleaning agents in a safe place, away from children and pets.

Slippage Prevention

Be cautious of slippery surfaces when cleaning wet lava rocks. Use slip-resistant footwear and exercise extra care to prevent falls or injuries.

Heat Awareness

Lava rocks can retain heat for extended periods, especially in direct sunlight. Before cleaning, ensure the rocks have cooled down to avoid burns or discomfort.

Use tools or gloves to handle hot lava rocks if necessary.

Electrical Safety

If using a pressure washer or any electrical equipment near the lava rock landscaping, ensure that all cords and outlets are properly grounded and waterproof.

Avoid using electrical equipment in wet conditions or near water sources to prevent the risk of electric shock or damage to the equipment.


How to Clean Lava Rock Landscaping: Simple Steps to Try
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