There are a couple of new animation features in 4.13 that makes this possible.
and
The hard part would be to author the tree growth in a 3d app like 3ds Max or Maya, export to point cache data, and then control the growth using pose animation.
There are a couple of new animation features in 4.13 that makes this possible.
and
The hard part would be to author the tree growth in a 3d app like 3ds Max or Maya, export to point cache data, and then control the growth using pose animation.