Oddly enough, I didn't reach to get the white ground. It was pretty much this way in the negative. M
y M9 shots of the same grove had the same tonality, and I realized that the reflective "snow" on the ground was actually a thick blanket of pine needles.
All these pictures made with a Pentax 110 18mm lens fixed at f2.8 on a NEX-5 body. Edited in CS2 mostly using flaming pear filters. Images cropped to select the most pleasing colors. Some took ten minutes, some an hour to do.
Example of swerve filter on a picture that was mirrored and part of it mirrored top to bottom. Three layers used and parts of each layer erased to make the composite. Flaming Pear Filter applied in CS. sRGB Color embedded into the file.
This picture goes well with a song I created. Open the link in another browser window, so you can still see the picture.