Is this crown rot on a phal? & is it salvageable? - Page 2 - Orchid Board

Becky15349 · #11 09-09-2009, 08:29 PM

I should have caveated with this - you can try to salvage this plant, but the truth is, it'll probably be set back quiiiiite a bit, maybe even years. Do you want to wait that long? As prolific as phals are these days, it might not be a bad idea to get a new one...people will attack me because I'm saying you should give up on it, but i'm just impatient

King_of_orchid_growing:) · #12 09-09-2009, 08:40 PM

I'll add a few more things...

It's too late for hydrogen peroxide or cinnamon treatments.

Those will not help with poor maintenance habits that have led up to this problem.

King_of_orchid_growing:) · #13 09-09-2009, 08:47 PM

Quote:

Originally Posted by stefpix

Would using peroxide instead of physan work as a monthly preventive misting?

stefano

This course of action is not necessary at all. It's poor maintenance practices that have led up to this issue, not disease.

A healthy plant has an immune system that is quite capable of handling many disease organisms perfectly fine.

Here's a little chemistry tid bit. H2O2 is not just a disinfectant but a bleaching agent as well.

OzPhal · #14 09-09-2009, 09:00 PM

Thanks for all of your replies guys - looks like the main plant probably is headed for an early grave. I'll try dissecting the main leave and apply some cinnamon and see what happens. Other than that i will seperate the keiki from the main plant and grow that on its own. I do eventually want to move to mounted king but at the moment i dont have anywhere to grow them effectively that way. In regard the marks on the leaves - when i first received the plant i gave it a misting of mancozeb (misting, not a drowning) so those marks you see on the leaves are residual mancozeb.

When i receoved the plant the overall appearance was great - leaves were nice and green, roots were prolific and healthy but i did notice a very slight spot of yellow on the leaf in the spot that has developed in to the rot - hence the spray with the mancozeb

OzPhal · #15 09-09-2009, 09:03 PM

Quote:

Originally Posted by King_of_orchid_growing:)

Here's a little chemistry tid bit. H2O2 is not just a disinfectant but a bleaching agent as well.

Try accidentally spilling some lab grade H2O2 on your hands and see what happens - it's interesting! hurts too and is absolutely not something i recommend.

Note to self - if a lab tech puts a bottle of H2O2 in the staff refrigerator (which you hadnt seen prior to this) don't assume that the water at the base of the refrigerator is just water - therefore don't go and grab a paper towel to wipe it up with your hands coz the H2O2 soaks through the paper towel and bleaches your skin... needless to say i didnt see the lab tech after that event!

King_of_orchid_growing:) · #16 09-09-2009, 09:10 PM

Quote:

Originally Posted by OzPhal

Try accidentally spilling some lab grade H2O2 on your hands and see what happens - it's interesting! hurts too and is absolutely not something i recommend.

Note to self - if a lab tech puts a bottle of H2O2 in the staff refrigerator (which you hadnt seen prior to this) don't assume that the water at the base of the refrigerator is just water - therefore don't go and grab a paper towel to wipe it up with your hands coz the H2O2 soaks through the paper towel and bleaches your skin... needless to say i didnt see the lab tech after that event!

Well noted!

Ray · #17 09-11-2009, 10:10 AM

I worked in the chemical industry and used 50% H2O2 in some of our processes, and have been spattered with the stuff. I don't recall any pain, but it does bleach the skin pretty well.

The lab techs in the plant in Memphis where we manufactured it (70%) used to have a contest to see who could hold it in their mouth the longest. I thought they were nuts, but they had the brightest smiles around and none of them ever had any dental issues!