What kind of medicine is used for rotting roots of flowers?

Rotting roots of flowers can be treated with potassium permanganate and vitamin B12. After the rotten roots of flowers need to be dug out first, wash the soil of the roots with clean water, then disinfect the scissors with potassium permanganate solution, cut off the rotten roots and old roots of flowers; soak the flowers in potassium permanganate solution, disinfect and kill germs, and then soak them in vitamin B12 solution to promote rooting, and finally re-cultivate them in the new soil.