That’s why I suggest giving natural, homemade solutions a shot as they’re gentler and can work incredibly well if you know what you’re doing.
Homemade Solutions To Get Root Cuttings Going

Mix 2-3 tablespoons of apple cider vinegar in a gallon of water and dip the cut end of the root in the solution before planting it in potting soil mix.
Apple cider vinegar is an excellent alternative to commercial rooting hormones as it contains acetic acid, which helps stimulate root growth very well.
This solution can be made easily at home as apple cider vinegar is something most of you will have in your pantries.
3) Comfrey Tea Spray
Most of you might know comfrey tea as a fertilizer used in the garden for flowering plants. However, it can also be used to encourage rooting in root cuttings as it contains good amounts of allantoin, which is a compound that promotes strong and healthy root development.