Pieris problem

Stanley 2

My Pieris Forest Flame is looking very floppy but does have the beginnings of growth on the tips, an odd leaf has a small brown patch bt not many.  A friend has suggested giving it some sequestered iron - does anyone else have any ideas or tips please?

Berkley

If your plant is in a position where frost can get at it AND early morning sun the next day it will show symptoms like the one you describe. Can you throw a piece of fleece over it and then, when it gets a bit milder, give it an ericaceous feed.