It looks like the picture was taken with the rose in the vertical position. Looking at the water droplets they seem thickest or heaviest on the bottom in that picture and are definitely running down towards the stem (darn gravity
). In the horizontal position the water droplets look to be running sideways. If the rose was placed in the horizontal position and then sprayed with water it would look more natural as that pose.
But let me add - it is a very nice picture! The water gives the rose depth and life.