I'm going to propagate my crassula cuttings and leafs. I did put them into water and there are very little roots appeared though 20 days passed. I know that the best way to propagate crassula leaf or cutting is to put it directly into soil for succulents. My current crassula tree (I've got cuttings & leafs from it) is growing in Lechuza PON soil for almost a year and it looks it feels pretty good.
But I still have a question. Can I put my crassula cuttings and leafs directly into such a soil? I'm asking it because it is granular and tough.