n Flower arrangers have their own show within this year's show, at which the Scottish Association of Flower Arrangement Societies will present a series of display entitled ''The Story of Scotland'' The Scottish Orchid Society will be celebrating its 40th anniversary with a display which sets out to prove that anyone who follows their basic rules will find that the species is not difficult to grow The Scottish Rock Garden Club presents an exhibit showing the many ways in which their interest can be fitted into various backgrounds - from patio planting to woodland gardens For the Scottish Rhododendron Society, the show is an opportunity to create the theme of a typical Himalayan hillside which also features azaleas