Mold is a type of fungi that grows both indoors and outdoors.
Mold is a natural part of our environment; it is always present in some form (everywhere).
Molds can be found outdoors in shady, moist areas, such as where leaves fall or vegetation decomposes.
Without the presence of mold on the exterior, our mulch, leaves, and grass clippings would never decompose.
Indoor mold is found in areas with a relative humidity of greater than 60%, such as attics, crawlspaces, basements, and showers (bathrooms).
Additionally, vacant homes can create an environment conducive to mold growth.In short, mold will grow at temperatures and moisture levels considered inhospitable by humans.
Mold will grow in a moist, cool crawlspace, but not in a dry, comfortable bedroom with a temperature in the 70 degree range (plus or minus).