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Zoey339 04-02-2020 07:25 PM

Brown spots
 
2 Attachment(s)
Anyone know what this is on my paphiopedilum? I've had it for 3/4 months and these spots are just showing up in the last few weeks. Theres one big spot on a newer leaf. And had a few on an old that came off. And noticed new spots forming on another leaf about the size of a small pea. Sun burn? It doesnt get a whole lot of light and the paph right next to it seems to be fine. I'm afraid it might be something worse. See pictures. Thanks

Ray 04-03-2020 07:06 AM

Hard to say for sure, but I suspect acidovorax - a.k.a. pseudomonas. If so, it is a water-borne bacterium that typically starts with a ~1/4" spot, then gets brown around it.

Remove damaged part of the leaf and treat the plant and growing area with a disinfectant like Physan or just plain bleach in water (1 oz/gal). Copper-based treatments like Phyton should cure the plant.

Zoey339 04-03-2020 03:38 PM

Quote:

Originally Posted by Ray (Post 915877)
Hard to say for sure, but I suspect acidovorax - a.k.a. pseudomonas. If so, it is a water-borne bacterium that typically starts with a ~1/4" spot, then gets brown around it.

Remove damaged part of the leaf and treat the plant and growing area with a disinfectant like Physan or just plain bleach in water (1 oz/gal). Copper-based treatments like Phyton should cure the plant.

Thank you. Stupid question. How do I treat the plant? Do I need to un pot it and wipe everything down or soak it? Do I just add that to the water?

Ray 04-03-2020 03:50 PM

Physan or bleach are topical only - killing pathogens on the surface - so you'd mix it up and spray all surfaces.

Phyton is applied the same way, but is systemic, so kills internal pathogens, as well.


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