By Nikhil Dhoka.
Just tried the Ivygen Add-on in free time and here is what i got by using very cool modifier "Build" over the branch mesh.. same thing is done for leaves mesh with little offset.
Opening scene is done through REMESH modifier where i keyframed the Octree depth and scale parameter over time.
Rendering is done with Cycles and Post production through After effects.
I also made a short Break down video and materials Node descriptions on my tutorial blog.