Keeping your garden lights on may seem like an extra layer of security for your home, but it can actually have a serious impact on outdoor wildlife, experts warn.
From birds to bats, this bug can endanger a wide range of species without you even realizing it, which is why it’s important to turn off lights when they’re not in use.
Below, you’ll find out why this common mistake is such a bad idea, and much safer Garden lighting The options you can switch to instead.
Why is it a bad idea to leave your garden lights on overnight?
Whether you leave your garden lights on for extra security Keep your home safe from thieves Or just forget to switch them on, leaving them on overnight can be bad news for wildlife in your garden.
“Some species of bats avoid light areas completely, while for other animals such as common frogs, artificial light can attract them. We’ve probably all seen moths flying around a street or security light – tired and at increased risk of predation,” says Helen Bostock, senior wildlife specialist. RHS.
She explains that while animals that are most active at dusk, dawn or during the night seem to be most affected, new evidence shows that day-active wildlife can also be affected.
“For example, robins, using vital energy, will continue to hunt and sing in lighted streets. Birds that choose to start their migration under the cover of darkness may be distracted by our bright cities,” she says.
What’s more, a study published in Journal of Biological Conservation Light pollution has been found to be a driver of insect decline, as it affects their movement, foraging, reproduction and predation.
“Houses should be designed to be wildlife-friendly, from lighting Garden landscapingTo help nature flourish along with people. “Just as you turn off the tap when you brush your teeth, if everyone turned off the garden lights at night, we would make a difference to wildlife,” adds Richard Benwell, chief executive. A link to wildlife and countryside.
Helen is a Senior Wildlife Specialist, working with the Plant Health team to provide wildlife gardening expertise and to develop and deliver positive biodiversity targets for the RHS Science Strategy and Sustainability Strategy.
Richard Benwell is Chief Executive of Wildlife and Countryside Link. He is also a board member of the Broadway Initiative and UK Youth for Nature and Chair of Oxfordshire’s Local Nature Partnership.
Which garden lights are the worst for wildlife?
LED lights – especially those with cooler color temperatures – are one of the worst culprits of light pollution. If possible, Helen Bostock recommends switching them to low-intensity, warm white bulbs – aim for 2700 Kelvin or less.
Where to buy wildlife-friendly garden lighting
Outdoor wall light with PIR sensor
This stylish outdoor light has a built-in motion sensor to ensure it is never turned on unnecessarily.
This warm white bulb has a color temperature of 2,700K and a 38-degree beam angle that is perfect for accent features.
How can I reduce light pollution in my garden?
To reduce light pollution in your garden and minimize the impact on wildlife, Helen Bostock recommends the following steps:
1. Keep your garden dark: If possible, keep areas of your garden completely dark and include safe passage throughout the space.
2. Keep light to a minimum: While you may need to light certain areas of your home, such as the front door or security systems, You can reduce the effect by using a motion sensor for a short period of time.
3. Angle your lighting: If possible, angle your lighting downwards or fit a cowl over the top to deflect it.
4. Choose low-intensity solar lights: These will have less impact than harsh, bright LEDs (and are cheaper to run as a bonus).
5. Avoid Garden pond Lighting This will help keep the pond life uncluttered.
6. Draw your curtains: Don’t forget about the lighting inside your home either. Keep blinds and curtains closed after dark, including patio doors.
Although it may be unrealistic to keep your garden in complete darkness every evening, there are many ways to reduce your impact – from switching to warm-color-temperature bulbs to choosing a motion-sensor holder.
For more expert advice on this topic, read our guide Garden lighting laws Or take inspiration from this incredible Eco Homes.
