In message , john martin
writes
a short while ago put some Pieris Forest Flame in some pots with some new
john innes no 3 soil.

the growing tip leaves instead of being red have turned a pale yellow.

should i add some proper garden soil or is there something else i should be
doing to get the red colour back?

I was under the impression that Pieris prefer an acid soil. Is JI3 not
more of an alkaline preparation with added lime? The yellowing would
suggest that. Perhaps repotting in ericaceous compost and a good soaking
of sequestered iron may turn things around.
--
Gopher .... I know my place!