Don't see why not.
I would not apply a liquid feed till it starts into growth.
Might be better to sprinkle rhodo granular feed around the base of
the bush, then spread a pine bark mulch over that.you can give a liquid
feed when the growth is under way
And don't be afraid to get stuck in to pruning, the dead wood, dead buds, and the weak and stringy growth that's chocking up the centre
of the bush.
Remember Rhodos can be tough old buggers, so get stuck in.
You will learn as you go.
Good luck with all your efforts.
John
