Alison Campsie and Martin Williams

Award-winning broadcaster Frieda Morrison will sign off from BBC Radio Scotland's Potting Shed gardening show for the last time this Sunday.

After more than 25 years of broadcasting for the station - 14 of them from the Potting Shed every Sunday - the Aberdeenshire-based presenter and singer has resigned.

She told The Herald that she had taken the decision because "the time was right."

BBC Scotland said it still hoped to hang on to her expertise via contributions to other programmes.

Morrison, 55, added: "It was a very difficult decision to make, but I felt that I had to move on.

"I feel its as good a time as any because the programme is in good heart. It has a kind of cult following I suppose. Even people who don't have a garden, and have no intention of getting a garden, tune in. It is an informative show, we get the information out there, but we do it with humour.

"I'd like to thank everyone for their support over the past 14 years. There are 12 gardeners who contribute to the show and we are like a little family. It has been a privilege to work with them."

Jeff Zycinski, head of Radio Scotland paid tribute to Morrison's work.

"I know that many of the listeners will miss Frieda on Sunday mornings but I wish her well with her future plans and I sincerely hope we will hear more from her on other programmes in the future.

"I would especially like to thank Frieda for the work she has done on various community projects. She has been so supportive of young gardeners and her enthusiasm was infectious."

Morrison, originally from Buckie, is a drama graduate who has also enjoyed a fruitful career on the folk music circuit.

She trained at DC Thomson as a journalist before joining the BBC.

Before the Potting Shed she presented Scottish Farming News and a number of features programmes including a 1989 documentary on the plight of farming in Nicaragua, for which she won the Sony New York Radio Award.

Her final programme will be broadcast this Sunday on BBC Radio Scotland and Morrison said she was looking forward to future projects.