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Mold in Humidors

A humidor is a box designed specifically for the maintenance and storage of cigars. Humidors are kept at a temperature and humidity that contributes to the longevity of cigars. Cigar aficionados should invest in a high-quality humidor if they intend to build up a collection of cigars. However, humidors that are not properly cared for or sealed can develop mold, which is a serious problem.

  1. Humidors

    • Humidors are normally built out of high-quality wood that is resistant to moisture damage and wear through constant use, such as Spanish cedar. The exterior is usually made of metal, although wood is more common; however, it is especially important that the interior of the humidor comprise wood that will resist moisture damage. The ideal humidity of a humidor is between 68 and 72 percent humidity.

    Mold

    • Mold growth in a humidor is usually the result of a sudden change in either temperature or humidity. Warmth and moisture are ideal situations for mold growth, and an increase in humidity or temperature makes it more likely. The ideal humidity of most humidors is one at which mold can grow if the humidor is left open or not sealed tightly at all times. A damaged seal can create a mold problem by allowing the temperature and humidity of the humidor to fluctuate.

    Identification

    • Mold will not only grow on the interior of the humidor itself; it will also begin to grow on the cigars contained within the humidor. Mold usually appears as a white, black, gray or green fuzz. It will often appear on cigars and completely change the color to green or black. Mold that grows on the interior lining of the humidor will often be white or gray. Left untreated, mold can destroy the cigars and the interior of the humidor.

    Treatment

    • All cigars in the humidor should be removed and checked for mold. Those that do appear moldy should be disposed of, as mold spores spread from the cigar while in the humidor.

      The humidor should be emptied and cleaned out with a soft cloth and isopropyl or denatured alcohol until no mold remains. The humidifying agent within the humidor -- usually a sponge -- should be replaced.

    Prevention/Solution

    • Regular maintenance of the humidor is one of the best ways to keep it from becoming moldy. Cleaning the interior of the humidor once a month with isopropyl alcohol will destroy any old spores that may be present. Additionally, checking the seals of the humidor can prevent the damage that results from improper sealing. Removing and cleaning, or replacing the humidifying agent or sponge regularly will help prevent it from becoming moldy.

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