Idea effects - tree roots

Another effect in my piece is the living tree roots.

This effect has been used before in a film called 'The evil dead' in which the roots came alive and rape a girl. I believe that in that particular case they used robotics / animatronics.

However i have decided to use both special and visual effects.
So for the first part where the roots are pertruding out of the oil and slashing at the girl i would use 'After Effects'
Here is a video showing the type of thing that is achievable -

When the girl is actually caught by the tree and bound in place, i would use pre-made vines on set as i believe trying to create vines around a person on a computer would be very difficult and would take alot of time.

References:

After Effects VideoCopilot 3D Vines (YouTube Video) [online] last accessed 17th December 2012 at  http://www.youtube.com/watch?v=R5tePLbD-04

- Tree-Rape - Google images [online] last accessed 17th December 2012 on http://www.google.co.uk/imgres?q=the+evil+dead+tree&hl=en&safe=off&tbo=d&biw=1024&bih=1233&tbm=isch&tbnid=HVAsY7Y4A5WFnM:&imgrefurl=http://haffandhaff.wordpress.com/page/6/&docid=M_VdLMtQTjjqsM&imgurl=http://haffandhaff.files.wordpress.com/2011/06/tree-rape.jpg&w=505&h=465&ei=KmzQUJX9HYOL4ATkpoDACQ&zoom=1&iact=hc&vpx=751&vpy=270&dur=667&hovh=215&hovw=234&tx=158&ty=106&sig=111639871220691663455&page=1&tbnh=141&tbnw=147&start=0&ndsp=35&ved=1t:429,r:9,s:0,i:112