what is best way try to root those received cuts? cup of water, rockwool or soil?
I recut them (90 degree), dip the stem in water and then in rooting hormone (I use the really cheap powder), and stick the cutting into a slightly moist plug or rockwool cube
The secret to getting roots quickly is to keep the medium just moist enough so it's not dry, and to start hardening off the cuts after 3 days in the dome. The roots are a survival mechanism you're triggering in the cut - the closer you can bring the cut to death without actually killing it the faster you'll get roots.
I like to let my cuts wilt without the dome, then mist with a bit of water and redome - do this often. squeeze out any excess water from plugs and cubes...