The dangers of mold

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Quest has compiled definitions provided by expert resources on molds, botrytis and other issues in cultivations.

There is no practical way to eliminate all molds and mold spores in the indoor environment; the way to control indoor mold growth is to control moisture.
— E.P.A.

black mold

Black molds grow in moist warm soil. Florida’s tropical climate, with its heat and humidity, creates a perfect setting for fungi to grow and thrive.
— University of Florida

A person is exposed to black mold may have the following mold symptoms: difficulty breathing, they may experience headaches, coughing, nausea, memory loss, dizziness, asthma, bronchitis, urinary tract infections, and over time they may even experience infertility… using a dehumidifier can control the humidity that attracts the dangerous fungus…
— Black Mold Removal Guide

Botrytis/Gray mold

Grey mold favours shade or dense foliage in the bed and extended periods of excessive moisture. The likelihood of infection increases by cool spring and summer temperatures and high humidity from frost control techniques, general irrigation and natural rainfall.
— Manitoba Government

Such infections are most common in well protected areas of the plant, where the humidity is high and air movement is poor.
— University of Illinois

The fungus Botrytis cinerea causes Gray mold… Temperatures of 70 to 80 F and ample moisture favor the disease. Frequent irrigation and/or rain promote disease development.
— Purdue University

Botrytis loves warm, and humid (50% or over humidity) conditions. Lowering humidity will slow and stop spore germination.

Additional articles on mildew and mold

• KEEPING BUD ROT AT BAY WITH HUMIDITY CONTROL
• NIPPING BUD ROT IN THE BUD: STOP CROP LOSS BEFORE IT STARTS