I took more than 7100 photos in more than 730 hours (using Canon 5D Mark II)
It is my first timelapse, hope you'll enjoy it :)
The music is called Arrival of the Birds by The Cinematic Orchestra... amazing music, my favorite..
Adding more details according to questions I've been recieving:
It was shot in a homemade "studio" that I made in a cabinet. I covered the back of the cabinet with black cloth, the flower was placed in the middle, and the whole cabinet was then covered with another cloth to insulate from the daylight (to keep the light constant, which is the most important). Two led lamps were used to illuminate the flowers.
Some flowers bloomed in hours, some in few days.. therefore the interval between photos varies from few seconds to several minutes depending on the type of flower.. after several missed tries you'll learn ;)
In order to keep ISO as low as possible (couldn't go lower than 640 because of low light), the shutter speed was usually 1/5 s at f16.
All flowers are mine or from my mother's garden :)
edit 20 Jan 2013: I made a page with even more info and photos: