White fungus on plants is typically caused by fungal diseases that thrive in high humidity environments.
Here's a more detailed breakdown:
- Humidity: High humidity is a key factor that promotes the growth and spread of many types of fungi, including those that appear as white mold or fuzz on plants.
- Specific Fungal Diseases: Several fungi can manifest as white growth on plants. Examples include:
- Sclerotinia sclerotiorum: This fungus causes Sclerotinia stem rot, which can produce white, fluffy growth on stems and leaves. It also forms hard, black structures called sclerotia.
- Appearance: The white fungus often appears as a fluffy or cottony growth.
- Affected Plant Parts: It can affect various plant parts, including stems, leaves, and fruits.
In summary, the presence of white fungus on plants is often a sign of a fungal infection that's been able to take hold because of favorable (humid) conditions.