Calculate how much mulch, compost, or topsoil you need for garden beds. Results in cubic metres, litres, and Australian bag/trailer sizes.
Add multiple beds or areas to calculate the total.
| Item | Value |
|---|
Mulch is essential in Australian gardens to retain moisture, suppress weeds, regulate soil temperature, and improve soil health. During hot Australian summers, a 75–100mm layer of mulch can reduce watering frequency significantly.
| Application | Depth |
|---|---|
| Garden beds (general) | 75–100mm |
| Trees and large shrubs | 100–150mm |
| Vegetable gardens | 50–75mm (pea straw/sugar cane) |
| Top-up (existing mulch) | 25–50mm |
Mulch is sold in 30L or 60L bags at Bunnings/Mitre 10, or by the cubic metre via landscape suppliers. Bulka bags (1m³) are economical for medium jobs. Trailer loads (1–3m³) suit larger projects. Always buy 10% extra for settling.