Cattleya Blc. - Black Spots
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  #1  
Old 02-20-2023, 01:43 PM
BrandonMD BrandonMD is offline
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Cattleya Blc. - Black Spots Male
Default Cattleya Blc. - Black Spots

[Apologies, I meant to post this under "Pests & Diseases "]

Can anyone help in identifying what these black spots are on my Cattleya Blc? The bulb is about 10 months old. The black spots on the leaves started to appear within the last week. I'm not sure if it's too much light or a fungus problem. Any advice is appreciated, thank you!

Light type: 2 x Barrina T8 (24w) Full Spectrum (48 watts total per shelf)
Light height: 8-10" above leaf
Light time: 8hrs per day
Water: Once a week, soak 30min, drain.
Potting Medium: Bark, Moss, Perlite
Temperature: 68 Fahrenheit / 20 Celsius
Humidity: 40-50%
Fertilizer: Once every 2-3 months
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Cattleya Blc. - Black Spots-01-jpg   Cattleya Blc. - Black Spots-01b-jpg   Cattleya Blc. - Black Spots-02-jpg   Cattleya Blc. - Black Spots-03-jpg   Cattleya Blc. - Black Spots-04-jpg  

Cattleya Blc. - Black Spots-05-jpg   Cattleya Blc. - Black Spots-20230220_131956-jpg  

Last edited by BrandonMD; 02-20-2023 at 01:50 PM.. Reason: Add comments
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  #2  
Old 02-20-2023, 04:35 PM
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Ray Ray is offline
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Cattleya Blc. - Black Spots Male
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My guess would be acidovorax (pseudomonas) infection.

I'd break out a copper-based treatment.
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  #3  
Old 02-20-2023, 07:23 PM
BrandonMD BrandonMD is offline
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Cattleya Blc. - Black Spots Male
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Quote:
Originally Posted by Ray View Post
My guess would be acidovorax (pseudomonas) infection.

I'd break out a copper-based treatment.
Thank you Ray. Should I also remove the infected leaves or just treat the infected areas with the Liquid Copper Fungicide?
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