The National Trust has announced the launch of a guide to help walkers find bluebells while enjoying some of the country’s walking routes.

With more than a quarter of its woodland ancient or semi-natural – which is perfect for bluebells to flourish – the trust plays an important part in maintaining these beautiful flowers.

The flowers normally appear towards the end of April, however, due to the cold snap which swept the UK earlier this year, the organisation believes their arrival will be delayed.

“After the coldest winter for more than 30 years it’s likely that the bluebell season will be up to three weeks late this year – sometime around mid-May,” the trust stated.

The new resource set up by the body will give walkers tips on which walking routes will feature the flowers and the best time to go and see them.

A rare lichen Micarea was recently discovered on damp, shaded volcanic rocks on the Killerston estate in Devon, the National Trust has announced.

With recent research suggesting that spending time walking in the countryside is an effective way of relieving stress, the National Trust is offering city dwellers the chance to explore the great outdoors for free.

On March 20th and 21st, the conservation group is giving people up and down the country the opportunity to experience some of the UK’s most stunning areas of natural beauty and enjoy some clean air.

Fiona Reynolds, director-general of the National Trust, said: “Our free weekend is the perfect chance to escape the stresses of our busy lives and get outdoors and breathe in some springtime fresh air.”

As part of the promotion, the National Trust is giving away free jars of air to those who live in the city.

The air has been captured from rural walking routes and coastlines, including Lake Windermere and Box Hill in Surrey.

There are a number of beautiful locations where visitors can enjoy a good walk, with the National Trust recommending Cragside in Northumberland and Lyveden New Bield in Northamptonshire.