I have a white fungus on top of soil of African Violets. What causes this?

Question

I have now removed the fungus, and what do I have to do now?

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Answer 1

Fungul growth usually can be attributed to overwatering, poor drainage and/or poor air circulation. Cut back on the watering and see if that keeps the fungus from coming back. You also can replace the soil if it seems too soggy. African violets like moist but not soggy soil. Especially be sure it doesn't stand in water.
Here is more on violet care:
https://www.gardeningknowhow.com/houseplants/african-violet/african-violet-care.htm