National Highways is continuing its fightback against a major outbreak of ash dieback in the South West by replanting 3,000 new trees.

The ash dieback fungus is now found across most of the UK. It affects shoots, branches and trunk base, causing canopy decline and the death of most affected trees.

National Highways began a programme of ash dieback removal in 2022, and while it will require continued monitoring, most clearance work along the A30 in Devon and Cornwall has now been completed.

Now a new programme will see the replanting off 3000 new trees including local species such as hazel, crab apple, holly, hawthorn, honeysuckle, European spindle, hornbeam and several others in lesser numbers.

These species have been carefully chosen to ensure local habitats are encouraged to flourish and will be planted in a variety of sizes on verges, with some rolling lane closures in place to safety carry out the work.

The aim is to complete the replanting works ahead of spring and the bird nesting season.

While the A30 in Devon and Cornwall is the first route to see removal and replanting, the government-owned company has an on-going programme for tree removal and replanting to manage ash dieback.

National Highways’ environmental manager Kate Rawlins said: “Ash dieback had started to affect trees on our land and we had been monitoring its spread where symptoms have become more severe and were making every effort to minimise its impact.

“We want to do everything we can to preserve the biodiversity of our soft estate, but at the same time, we need to make sure everybody using our land, on or off road, is safe.

“With clearance of dead or dying trees complete, we are now delighted to be able to replace trees and reduce the impact of the disease on the environment. In areas identified for replanting, we will be adding a broader range of native tree species for increased resilience.”

National Highways is responsible for 30,000 hectares of land which includes significant areas of woodland alongside our road network. This ‘soft estate’ supports a rich diversity of animal and plant life, including ash, one of our most useful and versatile native trees.

The company recognises the environmental value of trees and manages trees through their whole lifecycle with tree specialists carrying out regular inspections for safety and general woodland management.

National Highways also has a legal obligation to maintain a safe network, so must ensure trees don’t present a hazard to road users or adjacent property.

National Highways is also on the hunt for landowners and organisations that can help it plant an additional three-million trees by 2030.

The government-owned organisation only has enough room for less than 10 per cent — or roughly 300,000 trees — across its estate.

That’s why it’s donating up to 600,000 trees annually, all from its supply of native trees from a variety of species.

National Highways will be taking applications on a continual basis through to the last planting season in 2028/29.

People can find out more about National Highways’ approach to ash dieback here nationalhighways.co.uk/our-work/environment/biodiversity/ash-dieback

Stay up to date with roads affected here nationalhighways.co.uk/our-roads/south-west