Here is a nice article by Nebari Bonsai on a collected Pyrancaha yamadori tree from a hedge. The article(Losing Trees: Pyracantha Problems) describes the steps the author took to keep the tree from declining. Very interesting to read and see the great photo’s taken along the way to save the tree. Take a look. I have added the article to the Pyracantha tree page, listed under Deciduous trees and Bonsai Tree Information.

Photo courtesy of Nebari Bonsai.