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River stone · 07.01

20mm River Stone

Small, smooth, naturally rounded pebbles in warm earthy colours. Comfortable underfoot and easy to live with, for paths, garden beds, drainage and the gaps between stepping stones.

  • 20mm
  • Rounded
  • Unwashed
  • Sold per m³
20mm River Stone supplied in bulk by Bulk Landscape Supplies Brisbane
Natural product. As our products come from natural sources, they may slightly differ in colour, shape and size. Website images are a guide only.

Quick answer

20mm River Stone is a small, smooth, naturally rounded decorative stone in browns, yellows, reds, whites and greys. It is comfortable to walk on, heat resistant and won’t alter soil chemistry, so it suits garden paths, beds, lighter-traffic driveways, pond surrounds and drainage. Lay it about 50mm deep over weed mat; one cubic metre covers roughly 20 m².

20mm River Stone at a glance
Size20mm nominal
Shape and textureSmooth, naturally rounded
ColoursWarm browns, soft yellows, reds, whites and gentle greys
SuppliedUnwashed, in bulk
Sold byThe cubic metre
Typical depthAbout 50mm over weed mat
CoverageAbout 20 m² per m³ at 50mm
Approx. weightAbout 1.6 tonnes per m³

Coverage and weight are approximate. Check your area with the volume calculator.

Why choose it

Best features

  • 01Heat resistant
  • 02Withstands harsh weather conditions including intense summer heat, UV exposure, and heavy seasonal rainfall
  • 03Natural colours
  • 04Smoothly rounded texture
  • 05Naturally sourced and won’t alter soil chemistry or leach chemicals into your garden
  • 06Comfortable walking surface
  • 07Commonly used for pathways, driveways, garden beds, mulch, ponds, drainage, and stepping stone gaps
  • 08Low-maintenance and environmentally conscious
  • 09Weed suppression (when installed over weed matting)

Where to use it

Versatile applications

  • 01Garden pathways and walkways
  • 02Driveway surfaces for lighter vehicle traffic and parking areas
  • 03Water-wise inorganic mulch for garden beds
  • 04Pond and water feature surrounds
  • 05Decorative borders and edging that define garden spaces
  • 06Fire pit surrounds and outdoor entertaining areas where heat-resistant properties provide safety
  • 07Planter box decoration and pot topping
  • 08Great for drainage and stormwater management systems

Garden paths

These golf ball-sized smooth pebbles feature naturally rounded edges, making them the ideal choice for homeowners wondering what pebbles should be used in garden paths. This size provides a stable footing whilst remaining easy and pleasant to walk on, even in bare feet. Unlike larger stones that can feel uneven underfoot, or tiny pebbles that shift excessively, 20mm River Stone strikes a balance between stability and comfort.

Natural colours

Our 20mm River Stone showcases beautiful natural colouration that has been shaped and smoothed by flowing water over time. Each stone displays unique earthy tones including warm browns, soft yellows, reds, whites, and gentle greys. These stones maintain their attractive appearance whether wet or dry, ensuring your outdoor space looks stunning year-round.

Common questions about 20mm River Stone

Is 20mm river stone good for garden paths?

Yes. The smooth, rounded stones give stable footing and are comfortable to walk on, even in bare feet. Lay about 50mm deep over a compacted base and weed mat, with edging to keep the stone in place.

How much 20mm river stone do I need?

One cubic metre covers about 20 m² at 50mm deep. Multiply length × width × depth in metres to get cubic metres, or use our volume calculator.

Can 20mm river stone be used on a driveway?

It suits lighter vehicle traffic and parking areas. Lay it over a compacted road base with firm edging so the stone doesn’t spread under tyres.

Why does the stone look dusty when it arrives?

It is supplied unwashed. The fine dust rinses off with the first rain or a quick hose, revealing the natural colours.

Also in river stone

40–80mm River Stone

Golf ball to tennis ball-sized stone for gabions, dry creek beds and garden mulching.

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