What kind of soil do you have, Ajkcl? Are you trying for fast growth or flower production?

If you were thinking of fertilizing now, don't, its way too late in the year for that. You don't want to encourage new growth just as winter sets in and the plant should be entering dormancy anyway.

Absolutely, Bamboo!
I was thinking long term, Ajkcl, what you might want to apply next year, probably after bloom.