Propagating Salvia Divinorum Plant

[psychotropia1]

Hello guys!

I knew that in order to propagate salvia divinorum, you had to cut the solid part of the plant, then let it for a couple weeks in water, in order for it to grow some roots, and then plant it.

But i saw this video:

Where this guy cuts it and puts immediately in soil, without putting it in water first, in order for roots to appear.

So what is the correct method in order to propagate salvia divinorum?

Thanks a lot!