Green/white mold on phalaenopsis roots
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Old 02-22-2021, 05:43 AM
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camille1585 camille1585 is offline
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Welcome to Orchidboard! Sorry that no one has tried to help you with your questions yet.

Repotting was a good idea, but applying hdrogen peroxide is not. It's quite agressive and can damage all the fine root hairs and possibly kill the growing tips. That may be what you are seeing (dead root which is molding), though you shouldn't be seeing moldy bark. My inclination would be to not mess with the plants any further than that. Water when they need it, and keep an eye on the mold issue.
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Old 06-15-2021, 03:38 PM
mvmgems mvmgems is offline
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Green/white mold on phalaenopsis roots Female
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Quote:
Originally Posted by camille1585 View Post
Welcome to Orchidboard! Sorry that no one has tried to help you with your questions yet.

Repotting was a good idea, but applying hdrogen peroxide is not. It's quite agressive and can damage all the fine root hairs and possibly kill the growing tips. That may be what you are seeing (dead root which is molding), though you shouldn't be seeing moldy bark. My inclination would be to not mess with the plants any further than that. Water when they need it, and keep an eye on the mold issue.
Bumping since I’m experiencing the exact same issue. Mini phal with rotting roots due to old nursery sphagnum, treated with peroxide (before finding this board), and repotted in repotme phal mix with slotted pot. It was continuing to decline so after a month I unpotted it to check the roots and found most of them had continued to die. I kept it bare root for a few days to dry out, with once a day soaking in KLN, then repotted in same pot / similar media two days ago.

Checked the roots today and visible roots had white mold mycelium growing on them. Not sure if I should continue to care for them as a typical phal and hope fresh roots come soon (as it does have four small leaves), or get some fungicide like physan.

OP, did your plant ever improve?
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