Just broke off with tradition of rooting most of my cuttings in an SIP for the winter and will be rooting some this season this way.
My goal is to eliminate gnats if inside this winter and use the least amount of space for the few cuttings that I intend to root.
In Texas I've rooted cuttings simply by leaving them outside in the moisture control potting mix in an SIP. By spring they start growing. It's that simple.
The results are phenomenal as I don't have to even repot anything when they take off, but if rooting a quantity and space is limited, then this might be a better space saving approach.
Last winter I buried a longer than usual branch of a rare variety I have, in this pot. Did not have to do anything except start watering in the spring when I saw growth. You could see the result in the first photo.
The other two photos are of my new project today. When dealing with short cuttings, the goal is to make sure they don't dry up or rot before they root.