Answer: Rooting hormone is usually sold in powder form in either a small bottle or a foil packet; it is literally a hormone to stimulate root formation along the stem. A commonly seen name brand is Rootone; it is usually carried by garden centers and nurseries and occasionally large hardware chains. Try looking for it in with specialty fertilizers.
Rooting stimulator on the other hand is used as a soil drench to help newly planted plants establish faster. It usually contains nutrients and micronutrients to promote growth of existing roots. This would be the thing to use once your cutting has formed some roots and you have planted it into a growing medium.
Good luck with your cuttings!
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