Potted clivia keeps getting root rot, but after Grandma treated it this way, it bloomed again a few months later

Potted clivia keeps getting root rot, and Grandma only did these things, and a few months later it bloomed again!
Every year at this season, the clivia at home always shows root rot, and every year at this time I always get a headache not knowing how to deal with it. Grandma came to the house and saw this situation, and solved the problem with a very simple method. Let's take a look together!
Grandma said the main cause of clivia root rot is overwatering, but in the north in May the weather is really too hot. Too little watering will cause clivia to suffer from lack of water, while too much watering will cause root rot! Grandma said that when watering, you must check the moisture level of the soil, and only water when it has dried out completely!
When watering, you can use chopsticks to see whether the water has reached the roots of the clivia, otherwise no matter how much you water, if the roots are not reached, it is all wasted effort! When root rot appears, Grandma's method is to dig out the clivia, cut off the rotted roots, and then soak it in a potassium permanganate solution!
The soaking time is about 30 minutes. Doing this can sterilize the roots. After these tasks are completed, just repot the clivia, and then the clivia will grow very vigorously and produce beautiful flowers. It is not a big problem!