Active Material?

Inspired by the way ivy works I've decided to use ivy almost as an "active" material in my piece.  Instead of having plants or trees put in my piece as they are i thought maybe the act of the ivy growing and spreading could play a big part in it.  This reflects of the way Jason deCaires Taylor's underwater pieces shift and change in the environment and almost become one with it.  So i have decided to look more into different ivies and see just how they grow and change etc.