Ring-Like Pattern on Catt
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  #1  
Old 03-19-2023, 12:22 PM
DesignerofBeauty DesignerofBeauty is offline
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Ring-Like Pattern on Catt Female
Default Ring-Like Pattern on Catt

Hello Everyone,

I have a Cattlianthe Rojo which has developed this ring-like pattern on about half of its leaves. It's been there for some time, and it does not seem to be progressing. The pattern is also only on the top of the leaves, and not the undersides. I'm suspecting it's either a virus, or damage from cold temperatures. I'm curious to hear your input as to what might be going on.

Thanks for taking to time to help!
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Last edited by DesignerofBeauty; 03-19-2023 at 12:25 PM..
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  #2  
Old 03-19-2023, 04:24 PM
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If it were mine, I would keep it in a room away from the others and observe it. It could be some sort of fungus but it could also be viral. If it is a fungus, it will grow and bloom just as vigorously as it always has (or should) and you will not see any color break or further issues.

I took a Cattleya to an Orchid Society meeting once and someone jammed another Cattleya, with obvious color break on the flowers, against mine. I put it in another room when I brought it home. It always had put out new growth and bloomed like clockwork and, after the exposure to mosaic virus, it was late putting out new growth (the leaves developed a pattern), then very late to bloom. When it did bloom, the flower was slightly deformed and had color break so I knew...into the trash bin it went. When a plant succumbs to virus, there is a loss of vigor...which is why many plants are being bred to be virus-resistant.

If you have not had the orchid for many years, though, before you know it was exposed, it might not be quite so clear that is losing its battle to the virus. In that case, it is best to test it (twice to make certain that there is no error, or send the samples to a lab to have it professionally done--Critter Creek). But, in either case, keep it away from your other orchids and wash your hands and anything else that touches the plant very well after you touch that plant. Mosaic virus spreads easily. Funny enough, though, some study showed that coating plants with milk can help prevent plants from being infected by contact (sap touching unhealed wounds, though, will definitely allow mosaic virus an entry point).

This is a link to diseases to use as a guide:

https://staugorchidsociety.org/PDF/O...ySueBottom.pdf
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Old 03-19-2023, 09:01 PM
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Definitely isolate the plant and observe... I had a pattern (on a single leaf) on a Laelia flava, and of course was concerned. When I sampled the leaf for a virus test, got part of the pattern in my sample, the cross section looked more like insect damage. It tested negative. The pattern hasn't appeared on any other leaf, the plant is vigorous and the flowers normal. So I think this one dodged the bullet. If you don't have test kits, you should... since the only way to determine virus for certain is to test. Like with COVID (same technology) a single negative isn't definitive, but combined with lack of symptoms, the odds are improved. Worth re-testing also..

I think that Critter Creek is out of business, suspect that Agdia maybe bought them. Agdia now has a lab with testing services as well as their strips. Awhile back I searched for Critter Creek and Agdia came up. Now a search doesn't locate them at all.
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Old 03-19-2023, 09:26 PM
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I am sad to hear that Critter Creek is gone but it is good to know the other is there. Thanks for the information.
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Old 03-19-2023, 09:32 PM
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I don't know what Adgia's price structure for testing services looks like... to see any prices at all one needs to set up an account, which I didn't do. An approach that I definitely don't like.
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