SLC with weird marks

[Leafmite]

I agree with Brooke. I got these on my C. walkeriana during some cooler, rainy weather and treating them a couple of times with the Isopropyl alcohol stopped the infection in its tracks. The spots won't disappear but they won't spread once treated.

[Luizacft]

Thank you guys, I'll try cleaning the leaves with alcohol and won't use peroxide on the roots. Quick newbie question: I usually spray the roots of my orchids during repotting with hydrogen peroxide for cleaning up any possible rots. Does anyone have a better solution which is not toxic to small animals (I have a cat).


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[Brooke]

I never use anything on my roots when repotting. I rinse them off under the faucet. When roots are bad it is usually from over watering, not a contagious rot.

Brooke

[Leafmite]

With some of the orchids that are more prone to having roots rot if damaged, I soak them well before the potting and then carefully put them in dry medium and don't water for a couple of days to give the roots a chance to heal. This has worked very well for me.
Good luck!

[silken]

I don't put anything on my roots either. I removed any dead, rotten ones and then rinse well. If the plant is really root challenged I will give It a soak in seaweed water for an hour before re-potting. I then don't water until dry or nearly dry.