In The Garden

no-dig garden

4 reasons why your garden loves mulch

It’s not the most glamourous part of your garden, but mulch plays an important role in soil and plant health. In Perth, it’s especially important to keep soil cool in our intense summer heat.

By adding a top layer of mulch to your garden beds you are:

  1. Saving water and reducing your water bill by helping to retain moisture in the soil for longer.
  2. Shading delicate seedlings and plants from getting too much sun.
  3. Suppressing weeds – so your plants aren’t competing for water and nutrients.
  4. Encouraging soil organisms such as worms and good bacteria to thrive.


A good mulch will allow water to pass straight through to the roots of your plants and trees where it’s needed the most.

As a guide, your mulch thickness should be 2-6cm, although a layer of straw mulch can be much thicker. The best time to mulch is early spring and the middle of summer.

Organic mulches will naturally break down so you will need to top them up over time for them to stay effective.

Don’t pack the mulch too tightly around the stems of plants, shrubs and trees as it can cause them to rot.