Barks & Mulches

Barks and Mulches FAQs

Below, we've covered a few handy things to know about using, storing and making the most of barks and mulches in your garden.

What are bark and mulch?

Bark and mulch are materials spread over the surface of soil to help protect and improve garden beds, borders and planting areas. Bark is usually made from processed tree bark, while mulch is a broader term covering a range of materials, including bark, wood chippings and other organic matter.

They can be used around plants to create a neat, finished appearance while helping to retain moisture and reduce weed growth.

Where can I use bark and mulch?

Bark and mulch can be used across many areas of the garden, including flower beds, borders, around shrubs and trees, and on established planting areas. They can also be useful around fruit trees and other perennial plants.

Before applying, remove existing weeds and make sure the soil is moist. Spread the material evenly over the surface, leaving a small gap around plant stems and tree trunks.

What are the benefits of using bark and mulch?

Applying a layer of bark or mulch can help the soil retain moisture, which can be particularly useful during warmer or drier periods. It can also help reduce weed growth by covering the soil surface and limiting the amount of light reaching weed seeds.

Organic mulches gradually break down over time, adding organic matter to the soil. They can also help protect soil from heavy rain and temperature fluctuations while giving planting areas a tidy, finished appearance.

How thick should I spread bark or mulch?

The recommended depth depends on the type of mulch you're using, so always check the product instructions. As a general guide, a layer of around 5–7.5cm is often suitable for bark and organic mulches.

Avoid applying mulch too deeply, as an excessively thick layer can restrict air and water movement. Keep the material away from the stems of plants and trunks of trees.

Can I use bark and mulch around plants?

Yes, bark and mulch are ideal for use around many established plants, shrubs and trees. They can help conserve moisture, suppress weeds and create a more attractive planting area.

For newly planted areas, make sure plants are well watered before applying mulch. Leave a clear space immediately around stems to prevent the material from sitting against the plant.

Can bark and mulch help stop weeds?

Bark and mulch can help reduce weed growth by creating a physical barrier over the surface of the soil. They won't necessarily prevent every weed from appearing, particularly perennial weeds that spread from existing roots.

For best results, remove existing weeds before applying mulch and top up the layer as it naturally breaks down or becomes thinner over time.

Does bark and mulch improve the soil?

Organic bark and mulches can contribute organic matter to the soil as they gradually decompose. They can also help protect the soil surface and support better moisture retention.

Bark mulch is primarily used as a surface covering rather than a replacement for compost or soil improvers. If your soil needs enriching, consider incorporating a suitable soil improver or compost before applying your mulch.

When is the best time to apply bark and mulch?

Bark and mulch can be applied at different times of year, but spring and autumn are particularly useful periods. Applying mulch in spring can help conserve moisture as plants begin active growth, while autumn mulching can help protect the soil and planting areas through the colder months.

Avoid applying mulch to frozen or waterlogged ground, and make sure the soil has adequate moisture before spreading it.

How should I store bark and mulch?

Keep unused bags of bark or mulch somewhere dry and protected from prolonged exposure to rain. Store bags securely and follow any specific storage instructions provided on the product packaging.

If the material is stored outside, keep it covered while allowing suitable ventilation to help prevent it becoming excessively wet.

Why buy Bark and Mulches from Marshalls Garden?

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