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Basalt 20-40m Tumbled Stone

Basalt 20–40mm Tumbled Stone is a decorative natural stone with a dark charcoal to black colour. The stones are tumbled to smooth their edges, giving them a soft, weathered appearance that blends well into both modern and natural landscapes. The size range (20–40mm) makes them ideal for a variety of aesthetic and functional uses.

Uses of Basalt 20–40mm Tumbled Stone

Garden Beds & Mulching Alternative

• Decorative ground cover around plants

Pathways & Walkways

• Attractive, low-maintenance surface

Feature Areas

• Around sculptures, water features, or fire pits

Driveway Borders

• Used along driveways for contrast and erosion control

Pots & Planters

• Topping for potted plants to retain moisture and suppress weeds

Dry Creek Beds

• Mimics the look of a natural stream for drainage and style

Zen or Japanese Gardens

• Complements minimalist or meditative garden designs

Rock Gardens

• Used with larger boulders and succulents for drought-tolerant displays

How to Use Basalt 20–40mm Tumbled Stone

Surface Prep

Clear area of weeds, debris, and level the ground

Optional: Lay weed mat to reduce weed growth

Set Borders (Optional)

Use garden edging, timber, steel, or stone to keep pebbles in place

Spread the Basalt

Pour or shovel the tumbled stone evenly over the area

Ideal depth: 40–60mm to ensure full coverage and good visual impact

Level & Settle

Use a rake to level stones

Lightly water to help settle the rocks into place

Benefits of Basalt 20–40mm Tumbled Stone

Modern Aesthetic – Dark tones suit contemporary gardens and contrast with plants

Natural Durability – Basalt is a volcanic rock, extremely hard and long-lasting

Weed Suppression – When used with a weed mat, it reduces weed growth

Fire-Resistant – Ideal for use around fire pits or in bushfire-prone areas

Low Maintenance – Doesn’t fade, rot, or need replacing like organic mulch

Water Permeable – Allows rainwater to filter through to plant roots

Moisture Retention – Helps reduce evaporation in garden beds

Eco-Friendly – Long lifespan reduces waste and replacements

This text is designed to provide basic information, ideas and tips to support your project, it is not professional advice.