How to do if the root of the flower is moldy?

If the flowers are partially moldy, the moldy part of the root should be scraped off or cut off with a knife to expose the whitish part, and the cut should be placed upward in a cool and ventilated place to dry for 2-3 days, until the fresh cut is completely air-dried, and then replanted; if the root is all moldy, the flowers are difficult to treat.