Odontoglossum leaves browning

[asfd]

I repotted it yesterday and I think I had bad news. Most of the roots were brown and mushy and many came off by themselves. I trimmed those that looked worst but I think I left some unhealthy ones because I feared of trimming all of them. Should I have cut all the roots? Could it grow back some healthy new roots that way? I don't really care if it takes a while to bloom again, I just hope to save it. After trimming, I soaked the roots in hydrogen peroxyde for ~25 minutes and then rinsed them in water. I then took the following picture before potting it in new cocoa bark.

[RosieC]

I've got a Mlts with similar looking roots. I did like you and only trimmed the very worst.

Yesterday (looking through the side of the pot) I noticed tiny tiny new root growth coming off one of the bad bits.

Still not sure if I've done the right thing either, or if the new root growth will survive though

[richardb]

You are correct, that does look like bad news....BUT orchids have a great survival instinct. By leaving some roots you have at least given the plant some sort of anchorage in the new medium. I suggest that you give the plant a good watering after repotting, then ease off on the water for a while (nothing for at least a fortnight) to let the plant search for new moisture. I have always been taught the mantra that "if a plant looks like it is trouble the first action is to repot". Just like a physician, one can learn so much about the condition when the naked patient is in front of you.
I have followed this advice for many years and it has stood the test of time, even though not 100%.
Good luck, and do let us know the outcome in about 3 months time.
Richard

[asfd]

Thanks for your kind words. I hope it gets through. I will keep you guys posted. I never fertilized it, do you think I should start doing it at half strength or something like that every two weeks to help it get started?

[King_of_orchid_growing:)]

I don't think you need to worry about fertilizer until it's grown new roots that have reached roughly 2 inches. Then I think you can go half strength.

[richardb]

I agree - no fertilizer. It would be completely wasted because the plant takes up nutrients throught the roots.......and there aren't any at present.
The only thing which might help is a "rooting concentrate" such as Dynagro K.L.N,(I think in the US you might have something called Superthrive whch I believe could do the same thing but not sure). I soak my divisions in a solution of K.L.N for a while before potting and it seems to help, but I would be inclined to let your plant do the hard work for the time being. You will be surprised how resilient they are.
Richard