I use live sphagnum moss for taking cuttings (brill stuff). Cut the cutting below a node, the cuttings I use range from an inch to 2 inches. Insert in the moss & put in the heated propagater. They root in a couple of weeks and I transfer to 3 inch pots before potting on again. 100% success so far. If you have no sphagnum add 50% of vermiculite/perlite to your normal compost & use this instead.