Do Hedges Reduce Garden Noise?
A dense hedge can help soften some unwanted sounds and make a garden feel more private. However, a hedge should not be treated as a soundproof barrier. Its effect depends on the type and level of noise, the hedge’s height and width, how densely it grows, and whether there are gaps beneath or through it.
For persistent traffic noise, a continuous solid barrier such as a suitable fence or wall is generally more effective than planting alone. Combining a barrier with a well-planned hedge can provide greenery, screening and a softer appearance, while the barrier does more of the work of blocking sound.
How Much Noise Can a Hedge Reduce?
Plants and soil can absorb or scatter some sound, particularly higher-frequency sounds. Their effect on lower-frequency noise, such as traffic, is limited. The Royal Horticultural Society recommends a hedge that is wide and tall, with dense foliage; where space allows, it suggests aiming for a height of around 2 metres or more for greater noise-screening benefit.
These are general design principles, not a guarantee of a particular reduction in noise. If noise is seriously affecting your home or garden, consider a properly designed acoustic barrier and seek specialist advice. Read the RHS guidance on hedges and environmental benefits.
What Makes a Hedge More Effective?
Choose dense foliage
A hedge with dense, closely spaced foliage is more useful as a screen than a sparse planting with open gaps. Evergreen plants can provide foliage throughout the year, although the right choice still depends on soil, light, space and maintenance.
Plan sufficient height and width
A narrow, low hedge is unlikely to make a substantial difference to noise. Allow enough space for the chosen plants to grow into a broad, continuous screen. Check their mature size before planting, and make sure they can be maintained without growing into paths or neighbouring property.
Reduce gaps along the boundary
Sound can pass through openings. A continuous planting line, with suitable coverage near the ground, is more useful than scattered shrubs or gaps between plants. A fence or wall behind the hedge can provide a more effective physical barrier.
Keep the hedge healthy
Regular care helps maintain a dense screen. Choose plants suited to the site, allow room for their roots, and water them carefully while they establish. The eventual density and performance will depend on how well the hedge grows in its location.
Which Hedging Plants Could I Consider?
The RHS identifies several types of hedging that can provide environmental benefits, including Holly, Privet and Western Red Cedar. Plant choice should be based on the growing conditions and the hedge you can maintain, rather than on an assumed acoustic rating.
Our current noise-reduction hedging collection includes the following products. Their inclusion does not guarantee a particular level of noise reduction.
Holly hedging — an evergreen option to consider for a year-round screen.
Green Privet hedging — check its foliage retention and suitability for your site before choosing.
Leyland Cypress hedging — a vigorous conifer that needs sufficient space and regular management.
Compare the available plants in our full hedging collection, and check each product page for current sizes, availability and growing information.
Hedge or Solid Barrier?
If reducing noise is the main priority, a hedge on its own may not be enough. A solid, continuous fence or wall is generally more effective at intercepting sound. A hedge planted in front of or behind a suitable barrier can soften its appearance and add greenery, privacy and habitat.
Before building a barrier, check its height, position, construction and any relevant property or planning requirements. If the noise problem is substantial, an acoustic specialist can help assess the site and recommend an appropriate solution.
Planning and Planting a Noise-Screening Hedge
Before choosing plants, consider the noise source, the area you want to protect, the available width, sunlight, soil and drainage. Also plan access for delivery, planting and future trimming. Large hedges may need professional handling and careful establishment.
For help with delivery access and planting, read our hedge delivery, access and planting guide. For broader selection advice, visit our hedging FAQs.
Frequently Asked Questions
Will a hedge block traffic noise?
A hedge may soften some sound, but it should not be expected to block traffic noise. The RHS notes that plants have a limited effect on lower-frequency sounds such as traffic. A suitable solid barrier is generally more effective.
What is the best hedge for reducing noise?
Look for plants that can form a dense, broad screen in your garden. Evergreen hedging can retain foliage throughout the year, but suitability depends on the species, soil, light, available space and maintenance you can provide.
How tall should a hedge be for noise screening?
A taller and wider hedge can provide more screening than a low, narrow one. The RHS suggests aiming for around 2 metres or more where space allows, but this is not a guarantee of acoustic performance.
Is a hedge better than a fence for noise?
A continuous solid barrier is generally more effective at reducing noise. A hedge can complement it by adding greenery, privacy and habitat.
Can you help me choose and plant a hedge?
Landscaping Emporium supplies hedging, with professional planting available across North West England. Contact us with your postcode, photographs, approximate hedge length and details of the noise and site conditions.