Garden stone features are designed to last for years, but without the right care they can lose their colour, gather debris, and start to look tired. Whether you’ve installed a fresh driveway border, a decorative pathway, or a low-maintenance gravel bed, keeping your decorative stones looking clean and vibrant is straightforward with a simple maintenance routine. 

1. Start with the Right Installation 

Long-term appearance begins before the stones are even laid. A solid sub-base and a high-quality geotextile membrane reduce sinking, weed growth, and soil contamination. When stones mix with mud or organic material, they dull more quickly. Installing them correctly helps preserve their natural colour and texture from day one. 

At Mainland Aggregates, we advise customers to choose angular stone for stability in driveways and rounded pebbles for decorative borders, ensuring both function and appearance work together. 

2. Regular Raking and Debris Removal 

Leaves, soil, and organic matter are the main causes of discolouration. When left to decompose, they create staining and encourage moss growth. 

A light rake every few weeks: 

Use a plastic or soft-tined rake to avoid damaging smaller stones. 

3. Control Weeds Early 

Even with a membrane underneath, airborne seeds can settle and germinate. Small weeds are easier to remove than established ones. Hand pulling is usually sufficient, but for larger areas you may consider a targeted weed treatment suitable for gravel surfaces. 

Avoid heavy use of chemical treatments that could bleach or stain lighter coloured pebbles and cobbles. 

4. Wash Stones to Restore Colour 

Over time, dust and airborne pollutants can dull the surface. A simple rinse with a garden hose often restores their original look. For more stubborn grime, a gentle pressure wash works well - just keep the setting moderate to prevent displacing stones. 

If stones have become deeply embedded with soil, lifting and washing them in batches may be worthwhile for high-visibility areas such as entrance features. 

5. Prevent Moss and Algae 

Shaded or damp areas are more prone to green build-up. Improving drainage and airflow helps reduce moisture retention. In persistent cases, a mild patio cleaner designed for natural stone can be applied sparingly.