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Many of my oncidium alliance plants get dark spots on the leaves when they have been outside, where they get more light than indoors. However, the spots don't extend to the bulbs. That said, I don't have a Beallara. There was another thread about this plant and discolored p-bulbs: Beallara Patricia McCully leaf discoloration |
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I do not grow Oncidiinae, but from what I've read, it is normal to get those spots on the leaves, kinda like freckles. But I don't think that's your case, because the spots are on the pseudobulb too. I don't know, have you checked for spider mites?
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That's pretty normal. I've had that on some plants I've bought; seems to come about from poor air circulation. I grow outside, and those plants don't develop that on the new growths. If you buy it, clean it up with insecticidal soap (3 parts alcohol 1 part water + 1-2 tbs dishwashing soap) and give it really good air circulation.
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