Finally got my last humidor a few days ago and got it seasoned properly (I hope) so it was time to arrange cigars by wrapper type and strength. Was taking off tube tops on the Romeo Y Julieta Limitidas. On 2 of them I noticed mold or plume. found this post "This is what I've learned from many years in the biz. Plume can begin to form in as little as 2 months. mold can set in, in as little as 2 days. Now one of the ways to help determine if you got plume or mold is mold will almost always grow right back after wiped off. So if you have the time wipe off the stick and put in a bag or whatever by ITSELF and in a few days if it is back then you have mold my friend. Also mold will not come off very easily.(most of the time). Where as plume will rub right off. Mold also will stain the wrapper. So if you wipe it off and there is a light or dark spot where the (stuff) was then you have mold." The stuff rubbed right off and no stain on the cedar wrapper. I am going to put them in a separate bag though and hope it does not return. from the description "Romeo y Julieta Edicion Limitada cigars are blended with a core of vintage Nicaraguan & Dominican longfillers" does that mean its old enough to Plume???, I now wish I had not wipped it off. and from part of the same reply "Bloom or plume or WTF ever you want to call it is due to the oils in the cigar seeping through the wrapper and crystallizing on the wrapper. It typically takes years for this process to occur and many cigars wont do this at all. If I dug every cigar I have in my cabinet out and went through them all (including some ISOM's from the 60's) my guess is that I might, and I do repeat might, find one or two that have plume. Maybe. Possibly. It's really uncommon,which makes a cigar that has it rare and interesting. Mold is 99 times out 100 three dimensional...plume is not. Mold will usually wipe off with a moist cloth....plume will usually not but I have seen thin layers of crystallized oils that were affected by wiping. Mold shows up in (usually) hairy little spots...plume show up as a hard to see sheen, a thin film on the wrapper. In the years that I've been smoking, each and every time someone posts pics and says "...is this mold or plume..." it has been without a doubt mold. Every time. If you find spots on your cigars and are asking yourself "...gee, is this mold or plume..." let me help you out: It's mold. I have yet to walk into a B&M and find cigars with plume on them, but I sure have seen some furry boxes of moldy cigars that the owner then proudly said were "nicely aged and covered with plume" and I walked right out, never to return, every time." Now I am guessing its mold. I am not sure which 2 cigars they were. I think I know but will have to pull a row to make sure What a PIA.