I forgot to mention that apparently there is a zero-phosphate
agricultural fertiliser available, used for cut grass swards amongst
other things, which should be OK. It's NPK is 2:0:1 . Try your local
agricultural suppliers, although I imagine they'll only sell it by the
sackful, which seems a bit OTT just for one shrub.


--
Chris

E-mail: christopher[dot]hogg[at]virgin[dot]net