My 7 pot burgundy plant's leaves are getting crinkly followed by black/burgundy coloured dots along the veins and then they eventually drop. Below is a picture of one of the leaves that dropped. My mustard bhut plant is having a similar issue but the speckles are more black than the other plant. I have about 50 other plants that are fine. Is this a disease that I need to worry about spreading or something else? Thanks!
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