In article , Mark
Fawcett writes

No success at all with either batch, cuttings eventually shrivelled
and died. I had much more success rooting cuttings just in a glass of
water on the windowsill.

Forget granules, forget hormones - just use a halfandhalf mixture of
sand and peat and make sure you do it at the right time of year for the
type of cutting and for the plant in question.

--
Jane Ransom in Lancaster.
I won't respond to private emails that are on topic for urg
but if you need to email me for any other reason, put ransoms
at jandg dot demon dot co dot uk where you see