Adding mulch is one of the easiest ways to boost your garden’s health and appearance. But how much do you really need? Whether you’re refreshing a small bed or tackling a larger landscape, this guide makes calculating mulch simple and stress-free.
Why Mulch Matters
Mulch does more than make your garden look tidy. It also:
🌿 Retains moisture in the soil
🌿 Regulates soil temperature
🌿 Suppresses weeds
🌿 Adds nutrients as it breaks down
At Dalton Building and Garden Supplies, we carry a wide range of mulch options, including:
- Pine mulch
- Treeloppers mulch
- Soft fall mulch
- Dyed mulch (available in red, black, and brown)
How Much Mulch Do You Need?
✅ Recommended Depth:
- 50–75mm for most garden beds
🧮 Simple Mulch Calculator Formula:
Area (m²) × Depth (m) = Cubic Metres of Mulch Needed
Example:
- 10m² garden bed at 50mm depth (0.05m)
- 10 × 0.05 = 0.5 cubic metres
Mulch Calculation Table
| Garden Size | 50mm Depth | 75mm Depth |
|---|---|---|
| 5m² | 0.25m³ | 0.375m³ |
| 10m² | 0.5m³ | 0.75m³ |
| 20m² | 1.0m³ | 1.5m³ |
| 50m² | 2.5m³ | 3.75m³ |
Garden Mulch Tips
✅ Spread mulch evenly over garden beds
✅ Leave space around plant stems to prevent rot
✅ Top up once or twice a year as mulch breaks down
✅ Ask our team which mulch suits your garden best
Get the Right Mulch at Dalton
Dalton Building and Garden Supplies stocks premium mulch options for all garden styles and sizes.
Visit us in-store or get in touch today for expert advice and reliable delivery across Melbourne.