I found this video while researching how to construct wattle fencing.
Edit:Posting from my phone. Can't get video embedded...
The trick he uses to bend the springy green branches in half without breaking the is to twist or roll the branches so the fibers separate along the length of the branch instead of across. I imagine this bend only gets stronger when the wood dries out. One of the final images is him picking up the whole piece of fence by hand, demonstrating the fences stability and strength. All without a single nail, screw, drop of glue or length of string. I was impressed.