Posted: 22/05/2015 at 22:38
How about digging that one out, and any others that look dead, chop all the tops off, take off the sacking and find somewhere round in the back garden (I assume you have one) dig a little trench and pop all the roots in there with the stumps sticking out, heel them in and leave them - just to see if nature takes kindly to the idea. I have seen miracles happen.
In the meantime, if they were my plants I would dig the rest of them up, take off the hessian, check to see what the soil is like and remove the bark. Get rid of the stakes - they really dont need those. If you find the soil is really wet and not draining properly you could add some grit or sharp sand to help. Five or six plants across that space should be more than enough because these plants can get really big. Give the ground another jolly good dig over and replant. Take off the dead leaves, give them a little haircut, space them out and heel them in. Then leave them.
Tell them they`re getting no more molly coddling so they can please themselves !!
Whereabouts are you - north or south??
If all else fails, I can think of a few alternative hedging ideas that wont cost much at all - so keep smiling