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At what humidity does mold grow on cigars?

Mold thrives in humid environments that are between 65-85% humidity, but it can grow in any humidity below 50%. The relative humidity (RH), within the humidor, should be within this range when you place a cigar in it. If it isn’t, the relative humidity (RH) inside the humidor may rise because moist air from cigars condenses on cold surfaces.

Mold growth and cigars

Many cigar smokers are faced with the reality of mold growth. Although humidors can help keep cigars in good condition, mold can still grow even with the best care. There are a few things you can do to reduce mold growth on cigars.

Make sure that your humidor is properly maintained. Regularly check the humidity levels and adjust as necessary. Keep your cigars in the original packaging. This will reduce the cigar’s exposure to air and keep moisture out. If you notice mold growth, take the cigars out and throw them away.

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How humid is it necessary for mold growth?

Mold can thrive in any environment that has moisture. Mold will only grow in closed environments that have moist air. Mold can grow on any surface that is wet in an open environment. Mold growth requires between 40% and 80% humidity.

Mold growth in cigars

Although mold growth can occur in all humidity levels, it is most common to see it around 60-80%. Mold can multiply in high humidity, while low humidity can make drying out difficult.

Some symptoms of mold can affect cigars. These include a musty odor, black spots on wrappers, and color changes. These signs can be seen on cigars so it is best to get them out and let them air out before you smoke them.

How to stop mold growth in cigars

It is important to maintain the humidity level and smoke detector when smoking cigars. Too much humidity can cause mold growth, which can be unpleasant and unattractive. These are the top four ways to keep your cigars in good health.

Check that your smoke detectors work properly. Smoke detectors can be activated if there is excessive moisture in the atmosphere.

Keep your humidor at a consistent level. Mold can thrive in a dry environment.

Keep cigars in cool, dark places. Warm temperatures encourage mold growth.

Make sure the tobacco is clean and free from any debris. This will prevent mold growth on the tobacco wrapper.

These tips will ensure your cigars are healthy and free from mold. This will give you a better smoking experience.


This article about humidity and cigar mold growth will hopefully shed some light. It can be a hassle to deal with mold, but you can prevent it from growing on cigars. Below are some tips to prevent cigar mold growth. Keep them in mind when you’re about to light one.

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