The invention provides a variable shape device, with or without a base, for presenting all types of bouquets individually, vertically and without water. The device (1) is made of water- and deformation-resistant materials, with an adjustable attachment means having a male (3) and a female portion (4). The assembled device has a tapered portion (5) with tabs (11), which adapts to every type of bouquet, and a stable base (2). The openings (6) enable the bouquet to be initially retained in the device, for individual presentation, by any fastening means inserted in the openings. A water-tight decorated sheet (8), extending towards the top (5) of the outer walls (1) and adhering to members (7), is retained by a ribbon (21) on blade members which holds together the sheet, the device and the bouquet, the sheet providing water-tightness to the device (8). Water (10) introduced into the device collects at its base (2), thus providing stability to the bouquet and converting the device into a disposable flower-pot. In the same way, a cylindrical sleeve (20) provides for the transport, by air or by road, with very little water, of a bunch of 40 flowers from the producing country to a buyer country.