So upset.. Vanda fell broke root

[fishmom]

Read this about hydrogen peroxide:
Oncidium shriveling up, turning yellow!


I don't grow vandas, so I'm not much help there. I would keep soaking it regularly (daily) and leave it in the air in between. If a basket makes that easier, good. I have an ascocenda I keep in a well-ventilated plastic pot with the biggest chunks of bark I can get. Frequent watering and airy spaces between the chunks seem to work for this plant. It is my avatar.

[Irisha99]

Originally Posted by fishmom

Read this about hydrogen peroxide:
Oncidium shriveling up, turning yellow!


I don't grow vandas, so I'm not much help there. I would keep soaking it regularly (daily) and leave it in the air in between. If a basket makes that easier, good. I have an ascocenda I keep in a well-ventilated plastic pot with the biggest chunks of bark I can get. Frequent watering and airy spaces between the chunks seem to work for this plant. It is my avatar.

Your plant is very beautiful.
Should I wait until the damaged root dries up a bit before I start watering it?

[plantzzzzz]

Originally Posted by fishmom

Read this about hydrogen peroxide:
Oncidium shriveling up, turning yellow!

This user suggests that there is "actual science" behind not using h202 3% on roots, but doesn't post any sources to actual peer reviewed research.

[estación seca]

Originally Posted by plantzzzzz

This user suggests that there is "actual science" behind not using h202 3% on roots, but doesn't post any sources to actual peer reviewed research.

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.

[plantzzzzz]

[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.

[estación seca]

[QUOTE=plantzzzzz;878357]

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.

It seems like you should have at least SOME sources because it doesn't seem obvious.

No articles. I know plenty of people who have used it (mostly without need) to "disinfect" roots on varying kinds of plants, only to lose the roots.

Roots are very easy to damage with chemicals, heat, freezing or mechanical damage. They don't have a cuticle like the rest of the plant to protect them. Hydrogen peroxide will damage a young baby's skin, because they don't have as developed an epidermis as older children and adults.

[Orchid Whisperer]

[QUOTE=plantzzzzz;878357]

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.

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.