The Netherlands has a long history of going cuckoo for flowers (two words: tulip & mania), so its annual Bloemencorso (Dutch for "flower parade") should come as no surprise. Except that every float is beyond belief, and covered in flowers. The oldest and largest Bloemencorso began in 1936 in Zundert, where the only flower used are dahlias.
Bavarian artist Nils-Udo is known for his site-specific installations built in situ with local, natural materials—leaves, berries, hay, bamboo, flowers. His signature form is the Nest, which he has installed in locations around the world.
Xavier Dumont's resin & metal work is a lovely compromise between the controlled design of a grafted espalier and the natural contours of a twig, and it engenders appreciation for the beauty of both. The French sculptor's furniture pieces are on display in London and New York.