Posted: 30/06/2013 at 15:02
The second plant might be salvageable. Spray it with Provado Ultimate Bug Killer for 2 weeks and keep the tree watered and fed.
The first plant looks like Thuja - you can remove all the dead brown bits with your fingers but it will take a long time to look good. Thuja does regrow but not on old wood, hence using your fingers to remove the dead parts and not a saw.