Garden stone features are built to last, but without the right care they can fade, collect debris and start to look tired. Whether you’ve installed a new driveway border, a decorative pathway or a low-maintenance gravel bed, keeping your stones clean and vibrant is straightforward with a simple routine.

Start with the right installation

A long-lasting finish begins before the stones are even laid. A solid sub-base and a good-quality geotextile membrane help prevent sinking, reduce weed growth and minimise soil contamination. When stones mix with mud or organic matter, they lose their colour more quickly. Installing them properly from the outset helps preserve their natural texture and appearance.

At Mainland Aggregates, we recommend choosing angular stone for stability in driveways and rounded pebbles for decorative borders, so performance and appearance work hand in hand.

Rake regularly and remove debris

Leaves, soil and organic matter are among the main causes of discolouration. Left to break down, they can stain the surface and encourage moss.

A light rake every few weeks helps to remove debris, redistribute stones evenly and prevent compacted patches. A plastic or soft-tined rake is best, particularly for smaller stones, to avoid scratching or shifting them excessively.

Control weeds early

Even with a membrane beneath, airborne seeds can settle and germinate on the surface. Small weeds are far easier to remove than established growth, and in most cases hand pulling is enough. For larger areas, a targeted weed treatment suitable for gravel surfaces may help.

Try to avoid heavy use of chemicals that could bleach or stain lighter-coloured pebbles and cobbles.

Wash stones to restore colour

Over time, dust and airborne pollutants can dull the surface. A rinse with a garden hose is often enough to bring the colour back. For more stubborn grime, a gentle pressure wash works well — just keep the setting moderate to avoid displacing the stones.

If stones have become heavily contaminated with soil, lifting and washing them in batches can be worthwhile in high-visibility areas, such as entrances or feature borders.

Prevent moss and algae

Shaded or damp areas are more prone to green build-up. Improving drainage and airflow can help reduce moisture retention and limit regrowth. If the problem persists, a mild patio cleaner designed for natural stone can be applied sparingly.

Choosing well-draining aggregates from the start can also help reduce moss and algae, particularly in sheltered spots.

Top up when needed

Over time, stones can migrate, especially on slopes or high-traffic paths. Topping up thin areas keeps coverage even and helps the space look fresh and well maintained.

Because Mainland Aggregates supplies consistent grading and colour batches, matching your existing stone is straightforward if you need to add more later.

Keep it simple, keep it fresh

Maintaining garden stones doesn’t require specialist equipment or heavy labour. With good installation, light routine care and the occasional wash, you can keep your outdoor space looking clean, tidy and well defined for years.

If you’re planning a new project or refreshing an existing one, choosing quality decorative stone from a trusted supplier makes a real difference — both in appearance and longevity.