The suggestion to use on cuttings is interesting:
Give your cuttings a quick start with the help of cinnamon powder. Pour a spoonful onto a paper towel and roll damp stem ends in the cinnamon. Plant the stems in fresh potting soil. The cinnamon will encourage the stem to produce more stems, while helping to prevent the fungus that causes damping-off disease.
I’ve heard of people using honey as well with great success. Giving rooting hormones companies a run for their money? Going to start shopping for grow supplies at the grocery store lol!