Mold spores are everywhere, and many strains grow on food. Tiny mold spores are all around us in the air, which is not harmful to our health in moderation. Once a spore lands on a surface, it searches for water and nutrients to feed off of. Food is able to grow mold easily because it is often kept in the perfect environment to foster mold growth. The temperature is usually about right, air quality is good, and the food itself provides the nutrients and water the mold needs in order to grow. As the spore takes root, it begins to spread and create more spores and spread quickly on the surface of your food. Some molds can take over your food in a matter of 12 to 24 hours, while others may take weeks.