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This is a discussion on Phal orchid has black spots on roots within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; Hello I am still new to orchids. ---. It was in spag moss and I ...
Hello I am still new to orchids. ---. It was in spag moss and I re-potted it in bark and charcoal mix. When I was re-potting it, I notice it lost a few dead roots but didn't think much of it. What worried me was the black areas at the bottom crown so I put a little cinnamon on the areas and sprayed it with peroxide. Two days later its roots were already turning a gray color so I watered it with distilled water. Today I noticed the roots were turning a deep green color so I pulled it out of its pot to examine it. Now it has black spots on its roots and it doesn't look like the healthiest orchid out there... I need someone's opinion because I feel like I'm running out of options. I have a few pictures of it so you can get a good look of what I'm dealing with. The leaves are in great shape by the way. The yellow part in the center of the crown is cinnamon. I put it there as a precaution if its crown rot.
Cinnamon is not recommended for application to roots. It is too harsh for them.
I would soak that phal, unpotted in a fungicide solution for 15 minutes or so. Then let it dry up a bit but not completely. Roots are more pliable when damp/wet. Then I think you can pot it up in the bark mix that has been soaked for at least 24 hours.
I have a phal that has a similar situation and it has been living with it since I received it over a year ago. Its new leaves don't show the problem so I think it can survive.
---------- Post Merged at 06:40 PM ----------
I think it is likely at the present time the black is only on the one leave (It don't know the technical term for that part of the leaf). It hasn't made it thru to the next leaf up.