First and foremost, like all living things, molds need food to survive. The fact that molds can feed on almost any organic material makes their need for food not a problem. Next molds depend on their fungal spores to multiply. Another factor for molds to thrive and multiply is liquid water. This is the reason why it is strongly advised to fix water leaks immediately. And the last factor needed for molds to thrive is warm temperature and excessive humidity. Molds will typically thrive at temperatures from as low as 50 degrees Fahrenheit up to 70 degrees Fahrenheit.
-The Moldblogger Team