Mold or Plume...

There seems to be some confusion circulating regarding “good” and “bad” molds that develop on the surface of a cigar. Basically, the growth that is seen on the surface of cigars can be broken down into two categories: Mold and Plume. One is discouraged and the other is welcomed.
The plume takes the form of small layer of “fuzz” that is white in color. If you see this, don’t be alarmed, for you are doing everything right to store your cigars. This is a sign of proper aging and levels in the humidor. The older the cigars get in the proper conditions, the more plume you’ll find. Mold, on the other hand, takes a different form entirely.
Mold is something you never want to see in your humidor, or at your local cigar shop for that matter. It’s noticeably different than plume, for it’s bluish tint is very distinguishable. It also develops in spots, rather than evenly across the cigar surface, as plume will do.Should you not be able to distinguish between the two, you can simply use the “finger test”. Run your finger across the cigar surface. If the substance flakes off, it’s plume, if it doesn’t, you’ve got mold.