Molds act as environmental decomposers that play a major role in the breakdown of decaying organic material and plant matter. Molds produce mold spores that are constantly floating in the air that we breathe on a daily basis. The production and release of spores also helps in the reproduction and dispersion processes of a species of mold. There are thousands of different types of mold spores that are found everywhere. The wind is very important in the spreading of spores in the air and in the environment. Microscopic to the eye, they can only be identified individually under a microscope to observe its specific size and shape. They are evidently found on the outside, but can also be found in the inside of homes, buildings, etc. as well.

Mold SporesCommon outdoor spores are usually found in higher concentrations near fields, farms, heavily vegetated areas, etc. Also mold spore counts tend to peak during the latter parts of summer and early or mid-fall. During these times mold spores are in higher concentrated due to summer gardens, the mowing of lawns, dead and decaying plant material, and increased humidity levels. Common outdoor mold spores are: Ascospores, Bipolaris, Basidiospores, Curvularia, Epiccocum, Myxomycetes, Smuts, Stemphylium, and Torula. These are the commonly found outside freely floating in the environment. Even though they are common outdoor mold spores, they can be also found on the inside of homes. Most times common outdoor mold spores are found on the inside of a home is because of the constant air flow of the opening and closing of doors and windows and constant traffic going and coming from the outside.

Common indoor mold spores are listed as followed: Aspergillus, Penicillium, Cladosporium, and Fusarium. Mold spores released by these common molds usually found growing on organic material in houses such as curtains, baseboards, food stuffs, furniture, etc. When mold spores light or land on a damp surface in a home with a sufficient nutrient source, it then sparks microbial growth inside the home. From a tiny, microscopic mold spores, an abundance of mold growth can be the end result. It’s amazing how something so small can potentially grow into something that can spread wide-ranged in an indoor environment. Water damage indicator mold spores are also can be found indoors. Stachybotrys, Chaetomium, Memnoniella, Trichoderma, and Ulocladium are all types of water damage indicator molds that produce mold spores. The difference between water damage indicator mold spores and common indoor and outdoor mold spores is that they are not generally found in air samples. Common indoor and outdoor mold spores are mobile mold spores that freely float in the air. Water damage indicator mold spores are heavier and stickier than those of the common indoor and outdoor mold spores. It is rare to find water damage indicator mold spores in air samples that are taken. The only instance where these heavy mold spores are found in an air sample is when a water damage indicator mold colony is disturbed causing the spores to be released into the air. Mold spores are ubiquitously found in the environment that we live in.


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