Here's another view:
All of the adjustments in this image can be done in camera. This was done very quickly (I didn't bother to extract around every stem of the flower, too much time) but just to show you what's possible. As mentioned all of this can be achieved in camera by using the right lens, shallow depth-of-field, adding an 81A warming filter to the lens (it looks like this was shot in open shade) and slightly underexposing the image (spot meter off the flower's stamen and bracket in 1/3 stop increments).
To achieve this effect out of camera here's what was done.
In Photoshop
1. Roughly selected the area of the flowers petals using the lasso tool with a 2px feather.
2. Inversed the selection
3. Used the lens blur filter set to hexagonal 6 and a radius of 28 and blade curvature of 34. Used uniform instead of Gaussian.
Imported image in LR
In Lightroom
1. Increased color temp by +3 and tint by +25
2. Decreased exposure by -0.08
3. Increased recovery by 1
4. Increased blacks by 8
5. Increased brightness and contrast both by 9
6. Decreased clarity by -25
7. Increased saturation by +21
8. Post crop vignette of -25
9. Cropped to my personal preference
This sounds like a lot of work, but all in all it took about 15 minutes. To get the true effect the image would require more detailed work around the flower to extract the real detail, but again all of this can be done in camera.