We created this effect to bring out the beauty of the flowers and give the photo a more stylized look.
Instructions
1) First, we went to the Color edit panel, and chose the Saturation button.
2) We moved the slider all the way to the left, de-saturating the photo completely.
3) Next we set our brush at 100% opacity to restore the color totally and then made sure our brush size was smaller than the area we wanted to recolor. Upshot automatically defaults to Remove Effect.
4) Then we simply brushed over the flowers to restore the original color.