@regnartS I put them in the same medium I use for starting seeds: I start with an 8 ounce plastic cup with a 3/8" hole drilled in the bottom, filled with organic potting soil. Then using my finger, I make a 1" diameter hole in the middle, extending to the bottom of the cup, which I fill with Jiffy seed starting soil. I water it all down and let it sit overnight before I stick the clone in a hole I make with a skewer.
I figure that, since there are no roots, the medium immediately after cutting the clone is mainly to hold it securely in place. Rockwool or peat pellets or coir pellets have no/few nutrients, so I’d need to watch for root development and need to transplant once they develop. My theory is once roots develop, they will have a permanent environment in which to grow, so I will be able to transplant at my leisure when the clone becomes root bound. Or I can give them away as little plants in a starter pot.
The clones are now under a dome, with bottom heating at 78 degrees. I open the dome daily to let them get fresh air, wipe the condensation from the inside of the dome, give them a spray so they can absorb water through the leaves, then replace the dome. They are under the soft light I use to start seeds, 18 hours per day.
That’s the theory anyway, this is the first time I have tried cloning. We’ll see what happens…