Description
Slate Rock 50mm is crushed slate in pieces of around 50mm, in blue-grey with rust tones. Laid as a stone mulch it gives garden beds and borders a strong, layered texture, with a colour quite different from the warm browns of bark or the whites of decorative pebbles.
Stone does not break down like organic mulch, so a bed laid at the right depth keeps its cover without the yearly top-up that bark needs; its colour may weather over time. Pieces vary in shape and tone, which gives a natural, layered look. Collect it from the Keilor East yard, or choose delivery at checkout where it is offered to your postcode.
Technical Specifications
| Material | Crushed slate |
|---|---|
| Size | Around 50mm |
| Colour | Blue-grey with rust tones |
| Typical depth | 50 to 70mm over weed mat |
| Sold as | Loose, by the cubic metre in quarter-m3 steps |
| Availability | Keilor East yard; delivery at checkout where offered |
Coverage Rates
| Depth | 0.25 m³ | 0.5 m³ | 0.75 m³ | 1 m³ |
|---|---|---|---|---|
| 50mm | about 5 m² | about 10 m² | about 15 m² | about 20 m² |
| 70mm | about 4 m² | about 7 m² | about 11 m² | about 14 m² |
Area = volume divided by depth in metres. Larger pieces need enough depth to cover the weed mat fully.
Where to Use
- Garden beds and borders as a long-lasting stone mulch
- Feature areas and around specimen plants
- Native and dry gardens
- Around water features and dry creek beds
How to Apply
- Prepare the base – remove weeds, level the soil and lay weed mat, overlapping the joins.
- Edge the bed – fit edging so the slate stays in the bed.
- Spread the slate – lay 50 to 70mm deep, enough to cover the weed mat fully.
- Arrange the pieces – turn larger flat pieces face-up around plants and features for a natural finish.
Choosing Between Garden Covers
- Slate Rock 50mm: crushed slate stone mulch that lasts, with a strong blue-grey colour.
- Black Mulch and Pine Bark: organic mulches that add organic matter as they break down but need topping up.
- River Pebble 20-45mm and Tuscan Rock: other decorative stones for feature areas.
Important Notes
- Crushed slate pieces can have sharp edges. Wear gloves when handling and spreading.
- Sold loose by the cubic metre in quarter-m3 steps, so quarter, half and three-quarter cubic metre part loads are available.
- Check your trailer’s payload on its compliance plate before choosing a quantity; loose stone and sand are heavy.
- Stone and sand can carry fine dust containing crystalline silica. Keep the material damp while spreading or sweeping, avoid breathing the dust and wear a P2 mask in dry, dusty conditions; Safe Work Australia has guidance on silica dust.
