venturabananas

Roslyn, I wouldn't worry too much about it. It isn't caused by disease. Seems like there are several potential causes of the kinds of burns you're seeing. You can get symptoms like you're seeing from too much dry heat, too much wet cold, too much fertilizer, too few micronutrients, premature emergence of the leaf, etc. None of these will kill your plant in the short term, though you wouldn't want to expose your plant to any of them in the long term.

If I had to guess, the burns on your cigar leaf are probably caused by too much fertilizer. Essentially what happens in that scenario is that the cigar leaf emerges in a premature state, in the sense that the cell walls don't have sufficient calcium and maybe other micronutrients to deal with the elements (sun, cool, heat, whatever). The same thing happens sometimes if you chop a pseudostem way back and so the cigar leaf emerges well below where it would have had the stem been intact.

The burns on the older leaves could be from just about anything. From what you say, it probably isn't from too much fertilizer. Perhaps they were in contact with something hot or cold.

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