Beyond the aesthetic value, many of these arrangements carry a deep symbolism. The arrangement photographed here, three flowers growing on three stems per plant, is called Sanbon jitate, and the first flower represents the heaven, the second the earth, and the third the human.
EXIF info:
Nikon D700
Lens: VR 28-300mm F/3.5-5.6G
Focal Length: 190mm
Aperture: F/5.6
Shutter Speed: 1/1200s
ISO Sensitivity: ISO 320