Masdevallia floribunda black and white spots
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  #1  
Old 08-16-2024, 07:37 PM
Orchloe Orchloe is offline
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Masdevallia floribunda black and white spots
Default Masdevallia floribunda black and white spots

My Masdevallia floribunda has developed these black and white depressed spots. I live in San Diego. It lives indoors with the back of it facing against a north west window. I mist it twice a day, morning and night, and soak it once a week. I have a humidifier although it’s quite hard to keep humidity up in San Diego. What are your thoughts? (Also I’m new here so sorry if I formatted anything incorrectly)
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  #2  
Old 08-16-2024, 08:49 PM
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Masdevallia floribunda black and white spots Male
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Welcome to the Orchid Board.

Does it ever dry completely? Watering once a week seems not enough.

Misting doesn't do much. It doesn't substitute for higher humidity.

These are high humidity plants. They're not happy in low humidity.
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Old 08-16-2024, 08:52 PM
Orchloe Orchloe is offline
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Masdevallia floribunda black and white spots
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I mist pretty heavily so while it does dry out completely on occasion, I’d say it only happens two to three times a month. Do you think the spots are from being too dry?
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Old 08-16-2024, 10:26 PM
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The white actually looks to me a bit like sunburn. The black could be too. Along with needing to stay damp (can even be pretty wet if the medium is airy like fresh sphagnum) they are also low-light plants. They should never get direct sun.

---------- Post added at 07:26 PM ---------- Previous post was at 06:05 PM ----------

A note... in the winter in the northern hemisphere, northwest light is very gentle. In summer, the sun swings north, so it sets in the northwest, and in the late afternoon can become quite intense and hot. So that spot that was great in February, in summer not so much.
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Old 08-17-2024, 07:36 AM
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The spots might also be related to misting, if water stands on the leaves for a time afterwards.

Plants like humidity, which is moisture dissolved in air. To achieve that with misting, you need to do so into the air, not onto the plant.
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