The forum members comments are fantastic.
Just adding (if not mentioned already) - check the roots down in the depths of the pot - to ensure they're not taking a bad turn. Being too dry is an issue, but being too wet with not enough oxygen in the water can also be an issue.
So aside from providing recommended growing temperature and lighting level ----- also take a look at the drainage side of things of the orchid pot. Provide good drainage.
Also consider the
outer pot or decorative pot that has no holes - if there is one. If that outer pot inhibits air-flow and impedes good drainage, then consider removing the outer pot - at least temporarily. This is only assuming there is an outer decorative pot.
Also - if not already - grow the orchid in an area that has some air-movement ----- avoid growing in a still-air environment.
---------- Post added at 06:31 AM ---------- Previous post was at 06:19 AM ----------
Quote:
Originally Posted by early
I have a question re peroxide on root. I have never seen it recommended here on the post I have read, but many places I visited before I found OB, said to use it after removing root rot when repotting. A few months ago when I went into S/H I did spray some roots with it, never used it above media. Did I damage the plants I used it on?
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Early - hydrogen peroxide didn't ever kill any of my orchids when I decided to try spraying my orchids (roots, stem, leaves and all) of any incoming orchids that came via mail/shipping. But I did see a pattern - where the growth/development of the orchid was set back - as in they didn't appear to do much growing for quite a while after this H2O2 treatment. This was 3% H2O2.
However, I now do a mancozeb spray treatment instead for incoming orchids, which I notice doesn't do anything bad at all to any of the orchids.
I think the main thing to consider for anyone is - first see if there is a pattern when applied to 'healthy orchids' (ie. setback in growth). And - if that is consistently noticed - then also have to consider what could happen when applied to an unwell orchid.
For rotting issues, using a recommended systematic fungicide (not mancozeb, which isn't a systematic one) would be a nice way to go - such as agri-fos (or equivalent like aliette) and thiomyl (eg. cleary's 3336).