20kg Decorative Planter Topper Aggregates

Give your planters, borders and paths a neat, finished look with our 20kg bags of decorative stones. Choose the colour that suits your planter:

• Polar White Pebbles – smooth, rounded bright white pebbles. A striking contrast against black, grey and copper planters.
• Black Ice Gravel 20mm – angular chips in black, charcoal and grey. Crisp against white and light-coloured planters.
• Plum Slate – flat slate flakes in rich plum and mauve tones. Warm and natural with copper, corten and wooden planters.
• Green Slate 40mm – flat slate flakes in soft blue-green tones. Stands out against copper and black planters, and suits silver-leaved plants such as olive trees.

How many bags do I need?

One 20kg bag covers about 0.25 m² at 4cm deep. As a guide for our planters:

• 30cm and 40cm square planters: 1 bag (one bag tops two or three 30cm planters)
• 50cm square planters and 75cm troughs: 1 bag
• 60cm square planters, 100cm and 120cm troughs: 2 bags

Product details

• Weight: 20kg per bag
• Coverage: about 0.25–0.3 m² per bag at 4cm deep
• Colour: colours may intensify when wet
• Pond friendly: safe for use around ponds and other water features

Key features and benefits

• A tidy top dressing for planters that helps keep compost moist and stops soil splashing
• Ideal for borders, garden beds and general landscaping
• Fills gaps between patio slabs and along pathways
• Helps suppress weeds when laid over a suitable landscape membrane
• Durable, weather-resistant and keeps its colour for long-lasting appeal