The Woodland Trust Scotland and Scottish Wildlife Trust are calling on the public to back Scotland's entry in the arboricultural equivalent of the Eurovision Song Contest – the European Tree of the Year.
Lady's Tree,at the Scottish Wildlife Trust Loch of the Lowes Visitor Centre and Reserve, is up against trees from other European nations including England, Spain, Poland and the Czech Republic.
The Scots pine is the summer home of the UK's oldest breeding osprey, known affectionately by many as Lady. Since first nesting at Loch of the Lowes in 1990, she has laid 71 eggs and fledged 50 chicks.
Members of the public can vote for Lady's Tree at www.treeoftheyear.org until Saturday 28th February. The result of the competition will be announced on Thursday 5th March.
In October 2014, the pine was declared the winner of Scottish Tree of the Year, an annual search for the nation's best loved tree. The competition is organised by the Woodland Trust Scotland and supported by players of People's Postcode Lottery.
Carol Evans, Director of the Woodland Trust Scotland said,"Lady's Tree was a very worthy winner of Scottish Tree of the Year, as it shows how important trees are for biodiversity. It provides a home to a wide range of species including wood ants and red squirrels, as well as the celebrity osprey.
"There are lots of great reasons to vote for Lady's Tree. It's been at the heart of the drive to bring back ospreys to Scotland for a quarter of a century, and as a Scots pine, it is our national tree."
Jonny Hughes, Chief Executive of the Scottish Wildlife Trust said,"The Scottish Wildlife Trust would also like to thank players of People's Postcode Lottery for supporting this competition and helping conservation charities like the Scottish Wildlife Trust and the Woodland Trust to protect wildlife and wild places for future generations."
European Tree of the Year is organised by the Environmental Partnership Organisation, a consortium of six foundations supporting environmental community-based projects.
Other finalists in the 2015 European Tree of the Year competition include an Italian olive tree that is more than 2,000 years old, a black pine in the Czech Republic that resembles a seven-headed dragon, and Nottingham's Major Oak, which may have provided a hiding place for Robin Hood and his Merry Men.