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Road verges provide opportunity for wildflowers, bees and trees - University of Exeter

Road verges cover 1.2% of land in Great Britain – an area the size of Dorset – and could be managed to help wildlife, new research shows.

University of Exeter researchers used Google Earth and Google Street View to estimate that verges account for 2,579 km2 (almost 1,000 square miles) of land.

About 27% of these verges are frequently mown, 41% is wilder grassland, 19% is woodland and the rest is scrub.

There are "significant opportunities" to improve verges by reducing mowing and planting trees, the researchers say.

"Our key message is that there's a lot of road verge in Great Britain and we could manage it much better for nature," said lead author Ben Phillips, of the Environment and Sustainability Institute on Exeter's Penryn Campus in Cornwall.

"About a quarter of our road verges are mown very regularly to make them look like garden lawns – this is bad for wildlife."

Previous research has shown that reducing mowing to just once or twice per year provides more flowers for pollinators, allows plants to set seed and creates better habitats for other animals.

Phillips said: "Some parts of verges need to be mown regularly for safety, but many verges could be mown much less, and this could save money due to reduced maintenance costs. We found that only a quarter of frequently mown verges had trees, so there's potential to add trees and shrubs, which will also help to capture carbon. But tree planting must be done carefully to avoid damaging flower-rich grass verges, and to prevent any impacts on visibility for drivers, or damage to infrastructure from roots and branches."

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