Why does my bread get moldy so fast? And is it normal? The answer to this is not as simple as one might think. Some bread naturally is more prone to mold growth. Depending on the recipe, the acidity varies, the ingredients vary, and some bread just naturally is more prone to have mold. Store purchased nationally known company bread is less likely to grow mold or at least, will grow mold slower than homemade bread. The reason for this is the preservatives used. The nationwide bread companies, shipping throughout the US, have to rely on more preservatives to get the bread from the factory to the shelf, and the home without mold. It is, however, safe to say, all bread has a propensity to grow mold.
So why do bread and other foods get moldy more in some homes than in others? I witnessed this as a 20-year-old living in an apartment, as opposed to living at home. We had to store our bread and fruit in the refrigerator to limit mold growth. It seemed to grow almost immediately after we purchased it if we left these foods out on the countertop.