[QUOTE=plantzzzzz;878357]
Quote:
3% H2O2 is a strong oxidizer. If you've ever splashed any into your eyes or nose you would understand. It has been observed damaging roots over and over again.
There are no peer-reviewed research studies showing that parachutes save the lives of people falling out of airplanes, but people keep using them. [\QUOTE]
Alright, but you can splash it on to your skin and that's fine, so it's clearly not _that_ strong.
Can you show me sources of it damaging roots? Because all I can find on google is lots of people saying that it's great for treating root rot.
https://www.aos.org/AOS/media/Conten...DFs/desert.pdf
This AOS article suggests it, along with stuff from many orchid societies.
You should have at least SOME sources because it doesn't seem obvious, given how many successful growers use it.
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Bottom line, it is your plant, treat it with what you feel comfortable with. But, I still side with those that say to keep hydrogen peroxide off roots.
If you have epiphytic orchid roots (like Vanda's) that are rotting, my advice is to take them out of the medium (1) to figure out why they are rotting (usually too wet/no air circulation for too long). (2) leave the roots exposed, with air exposure and drying the rotted roots will become papery and can be trimmed back or removed; far safer than chemicals.
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