Sometimes when you purchase rare succulents and they may arrive either in a cutting or that has little or no root at all. There are many methods to get the steam cranking out the roots but there are few ways I find it works personally.
First of all the cutting need to be dry and has a layer of scab. If it doesn't just let it dry under the shade or by the window. Then you can proceed with the following methods:
1. Water Propagation
This is my first option when the weather isn't warm enough (usually winter and early spring) or when I couldn't bare standing outside inspecting the succulent. Water propagation works wonder as you only leave the cutting sitting on the glass jar or shot glass filled with water. It's easier to watch the progress when the jar is transparent. I like to put them by the window sill. I couldn't stress enough that you gotta to be patient. Different succulents will grow new roots at different times. It will usually take longer to grow new roots during cold months so be patient.
It's easy to spot with water propagation as you will basically see the white roots keep growing (sometimes out of control)
2. Soil Propagation
You let the plant sit down in semi-moistened soil (using the mist spray) and allow the soil to dry out before you moist the soil again. You can do it outdoor but you have to put them under the shade. Remember do not overwater the soil.
You will first notice the bottom of the leaves will dry out as these are first to be drained out but don't get panic. Then you will notice their vibrant colours will be fading (little or alot depending type of succulent).
3. Air Propagation
If first and second method doesn't work, it could be due to the succulent is not completely dried out. I will leave her by the rack and let her find her own path! I need to note that environment has to be humid, so you might have to mist the area if it's indoor. Her root will usually be red colour and that's when you can start misting it again.
4. Full spectrum grow light
There are many types of grow light out there and I have tried few types. If you are looking for a grow light I would 'Full Spectrum' grow light instead of normal blue and red led light. The full spectrum light has additional warm and white light. I personally find my succulents root and grow better under these light.
So once they starts to root, well you know, potting time!