How to Mulch Your Brisbane Garden Before Summer

A fresh layer of mulch can make a garden look instantly tidier, but its benefits go beyond appearance. Covering exposed soil helps reduce moisture loss, suppress weed growth and protect the soil from temperature extremes.

As Brisbane gardens head towards summer, checking your mulch is a useful weekend job. Whether you’re caring for an established bed or planning new planting, a little preparation helps you get more from the material you spread.

Check What’s Already There

Before adding more mulch, gently move aside a small section of the existing layer. Check its depth and the condition of the soil underneath. Some areas may still have plenty of coverage, while others have become thin or bare.

You don’t need to remove an older organic mulch simply because it has started breaking down. Decomposition is part of its job. Top up where needed rather than repeatedly adding thick layers across the entire bed.

Prepare the Soil First

Remove weeds before covering the ground, taking care around shallow plant roots. Mulch can discourage new weeds, but spreading it over established weeds won’t reliably solve the problem.

Check soil moisture too. If the soil is dry, water before applying mulch so you’re covering moist ground. Avoid treating mulch as a solution for persistently waterlogged soil; drainage problems need attention of their own.

Choose a Material That Suits the Bed

Organic materials such as aged bark, wood chips and leaf mulch gradually break down. Their texture and appearance vary, so consider both the planting and the finish you want.

A coarse bark mulch can suit a bed of established shrubs, while a finer material may be easier to spread between smaller plants. Avoid burying low-growing foliage or plant crowns, and check the needs of plants that prefer dry conditions around their bases.

Spread an Even Layer and Keep Stems Clear

For many established garden beds, an organic mulch layer around 5–7.5 centimetres deep is a useful guide. Adjust for the material and planting, and include existing mulch when assessing the total depth.

Keep mulch away from trunks and woody stems, leaving roughly a 10-centimetre clear circle around them. A mound pressed against a trunk can keep the bark damp. Aim for an even covering across the surrounding soil instead.

Keep Checking Beneath the Surface

After watering, move a little mulch aside to check that moisture has reached the soil. A wet-looking surface doesn’t necessarily mean the root area has received enough water.

Revisit the bed occasionally to remove weeds and check coverage. For new planting projects, explore The Nurso garden centre and bring photos of your space to help guide the conversation.

A thoughtful mulch refresh is a simple way to care for the garden you already have. If you’re planning a visit, find our Chandler location on The Nurso contact page and come along with your garden questions.