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Rewild your garden for our winged wonders

By Features Reporter

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A common blue butterfly on a bird's-foot-trefoil. Picture: Tim Melling/PA
A common blue butterfly on a bird's-foot-trefoil. Picture: Tim Melling/PA

It's a worrying reality that many of our native butterflies are in decline, as highlighted in a recent study of European species.

The research, published in the scientific journal PNAS, noted that overall numbers have declined by 50 per cent since 1976.

Indeed, seven out of 10 British species of butterfly are declining, many of those very rapidly, and some which were previously common, including grass feeders such as small skipper, common blue, small blue, small copper and small heath, according to the charity Butterfly Conservation (butterfly-conservation.org).

Conservationists believe that rewilding your garden can go some way to stemming the decline, even in a small space.

The charity’s director of conservation Dr Dan Hoare, co-author of the research paper, explains: “Going wild in your garden is absolutely the right approach.”

He recommends some key steps to rewilding your plot to help these beautiful insects thrive once more.

1. Let grass go wild

“Introduce small flower species to your lawn by letting your grass grow longer and wilder,” he suggests. “Put away the mower and let your lawn grow between April and July.”

He concedes that some gardeners who want a neater space will be reluctant to let their beloved lawn grow to huge proportions, but says you can do your bit by just leaving a smaller area untouched.

“Could you leave a patch at the end of the garden to grow longer? Could you leave the edges? I have two kids who want to run around on the lawn all summer. I leave a long patch in the centre and then have a doughnut-shaped short bit that I mow and they run around that.” Leaving the grass long provides space for the caterpillars of grass feeders like the speckled wood butterfly, meadow brown and gatekeeper. He says sprinkling wildflower seeds into your wilder lawn could help, but might not even be needed.

“Are you getting clovers, dandelions and bird’s-foot-trefoil in your lawn, native flower plants which will contribute to pollinators including butterflies and bees? If so, you won’t need to add very much, just maybe scatter some seeds at the end of the autumn after you’ve mowed the grass.”

2. Go native

Plant butterfly-friendly flowers in your garden or green space. Picture: iStock/PA
Plant butterfly-friendly flowers in your garden or green space. Picture: iStock/PA

“Get as many native plants which grow wild into your garden as you can,” says Hoare. “We have lists on our website (butterfly-conservation.org) you can choose from, but typical plants include bird’s-foot-trefoil, yarrow, clovers, trees and shrubs which are good nectar sources, such as willow and ivy, and blackthorn in your hedge, instead of leylandii or laurel.”

3. Don’t use pesticides

“Pretty obviously, pesticides are designed to kill insects,” he warns. “We are putting toxic chemicals all over our gardens, where we’re sitting having a picnic or playing with our kids. In most cases they’re just not needed.

“If you have a healthy ecosystem of insects visiting your garden it should keep the balance of nature going – wasps and ladybirds will eat the aphids,” he says.

4. Turn your garden lights off

“Light pollution is a huge problem for a whole range of wildlife including moths, bats and birds. There has been a huge proliferation in LED lights and solar lights which charge up in the day and stay on all night, when you’re not actually using the garden.

“By all means, use lights when you are sitting outside having an evening meal, but turn them off when you come inside. Solar lighting needs to have an off switch.

“Lighting at night disrupts the natural life cycles and rhythms of huge numbers of wildlife. Some butterflies migrate at night but it has more of an impact on moths."

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