04/08/2023
How does one calculate the amount of mulch one needs in the garden?
Mulch is usually spread between 50 and 100 mm thick. At 50 mm thick, one cubic metre (1 000 litres) covers 20 square metres; at 100 mm thick, it covers 10 square metres.
Square metres (sqm) are calculated by multiplying the length of an area in metres by its width in metres.
Mulch depth should be thicker on bare soil and thinner around shrub and tree stems to avoid possible rot.