hormone

If a grower had a choice between just rooting hormone for: 1)softwood cuttings 2)semi-hardwood cuttings 3)hardwood cuttings the brand is dynaroot. there is no other brands but that one. which is the correct one? my guess is 1)softwood cuttings is for cannabis but need opinions...

So as I understand it by reading a bunch of other posts about light cycles, cannabis plants grow and build hormone at night. During the day they gather the energy to do so. They build up so much hormone in fact that with 12 hours a day of darkness the have the ability to produce their flowers...