The Queen Mother's love of gardens is the hook for a new endowment fund that is being established by the National Trust for Scotland.
"Now the Queen Mother's name can be an inspiration to the trust's future gardeners
is the message being sent to 60,000 of the charity's supporters in a direct mailing.
It is hoped the fund will pay for three students a year to attend the charity's "teaching gardens
at Threave. To do so requires £127,000 each year to cover tutoring costs, student allowances and other costs such as equipment and accommodation.
Many former students from the course have achieved head gardener status at the trust's properties. One person travels from the US each year to take advantage of the specialist tutoring.
The National Trust for Scotland, whose membership stands at an all-time high of 256,000, has appointed direct marketing agency Target Direct to handle the campaign. It is focussing activity on people from the charity who have responded to previous environment/gardens appeals as well as supporters living near the area of Threave.
Lorna Stoddart, head of development at the National Trust for Scotland, said: "A legacy would be ideal as that would help us set up an endowment fund.
"Target Direct has developed a core fundraising proposition for the National Trust for Scotland that is consistent across all our communications.