Posted: 25/05/2014 at 21:54
I have two of these. One has never given a moment's trouble, the other is about to be put though the shredder.
I think they're a weak cultivar. beautiful if everything is right but quick to look poor. Your brown stems I know well, also very anaemic looking leaves early in the season which the good one has to some extent.
I'd give it time, don't let it dry out but don't overdo it. Don't feed an invalid. You've given it a good start.
You might as well cut off the dead bits, it will lokk better for that