Brussels, Belgium Since the flowers are not planted, flower carpet of begonias takes only 3 days. The Flower Carpet is one of the greatest traditions in Brussels. The legendary event is held every two years on the Grand Place, creating a huge floral tapestry. This tradition comes from 1971. Landscape architect E. Stautemans cover the central area of the Grand Place vast tapestry of flowers. The event had such to the city of Brussels did not hesitate to re-install in the coming years. Since 1986 it is every two years. Flower Carpet was installed in just 4 hours. Some 100 gardeners are responsible for placing more than 700,000 begonias. Per square meter is used about 300 flowers.