So you should be coming into your spring/summer. Wait until the temps get to 18 to 20 c day and night. This should get the Phal to enter into its vegetative stage. Then gently peel off the covering of a node on an old GREEN spike and have at it.... good luck!
The paste should work whether you are using it on a species or a hybrid Phal. And where the plant is grown has no bearing on its effectiveness.