Here is the 360-deg spin movie going through two years of seasons. This animation was then made into a full-color hologram, in which the 3d tree appears to change seasons as you move around it.
MegaPOV
to render the images
POV-tree
to generate the tree itself
makesnow.inc
by Gilles Tran to deposit the layer of snow on the branches
GraphicConverter
to convert the individual images into a movie
The foliage and blossoms were modified in
Mathematica
to grow over time and then fall off
Hologram made by
LITI Holographics