Where did YOU hear bad advice to spray orchid roots with hydrogen peroxide?
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Where did YOU hear bad advice to spray orchid roots with hydrogen peroxide?
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  #21  
Old 12-24-2021, 11:37 AM
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Well, good golly Bill. Zero-tol. Who knew? Never heard of it. Super interesting... I read up on it on Arbico website. Gotta have some by spring. I learned something new today.

It makes perfect sense to choose something specifically designed for plant use, as opposed to random stuff out of the pantry. When one has more than a few plants, some super hard or impossible to replace, it sure makes even more sense. Gracias for your comment.

---------- Post added at 09:37 AM ---------- Previous post was at 09:33 AM ----------

PS An interesting aside about know what you're using and why. I've used isopropyl alcohol for years on plants. Ran out a ways back, and daughter was coming to town and brought me some from her clinic. I got a bit of damage on a couple of plants I used it on, and zero difference on a couple others. Said to myself, huh, that's weird. Read the label and it was medical grade 99%. Frankly I hadn't given it a thought. Yup, double-checking never hurts.
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  #22  
Old 12-24-2021, 06:00 PM
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Quote:
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I used their Zero-tol product in my greenhouse for years with no issues.
Ray ....... is that H2O2 ? And you used it for media drench with orchid roots within it? I tried root spray at one stage ..... for trial. No plant deaths. But noticed setback of growth rate. As in a relatively long inactive period before growing occurs. Not the same observed pattern as when no H2O2 was applied ...... as in 3% concentration.


Last edited by SouthPark; 12-25-2021 at 03:18 AM..
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  #23  
Old 12-24-2021, 09:36 PM
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Where did YOU hear bad advice to spray orchid roots with hydrogen peroxide? Male
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Just remember that Hydrogen Peroxide is a weak Bacteria-cide used to treat only bacteria infections (before antibiotics became common). Using it for other purposes, would be a waste of it.

And I do remember having butter put on burns as a child. Did not help with the pain but did make you smell like popcorn.
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  #24  
Old 12-25-2021, 10:17 AM
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Where did YOU hear bad advice to spray orchid roots with hydrogen peroxide? Male
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Quote:
Originally Posted by SouthPark View Post
Ray ....... is that H2O2 ? And you used it for media drench with orchid roots within it? I tried root spray at one stage ..... for trial. No plant deaths. But noticed setback of growth rate. As in a relatively long inactive period before growing occurs. Not the same observed pattern as when no H2O2 was applied ...... as in 3% concentration.

Zer-tol is a general disinfectant, effective on bacteria and fungi. I donít recall the final, as-applied concentration specifically, but I seem to recall it being on the order of a third of a percent or something - well below the 3% in OTC stuff.

Somewhere, I have the remains of a very old jug of the concentrate, and itís about 20%, yet being stabilized with the peracetic acid, itís still active. I do know that at that concentration, itíll attack the skin if it spills on you.
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  #25  
Old 12-25-2021, 01:52 PM
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Zer-tol is a general disinfectant, effective on bacteria and fungi. I donít recall the final, as-applied concentration specifically, but I seem to recall it being on the order of a third of a percent or something - well below the 3% in OTC stuff.

Somewhere, I have the remains of a very old jug of the concentrate, and itís about 20%, yet being stabilized with the peracetic acid, itís still active. I do know that at that concentration, itíll attack the skin if it spills on you.
Thanks for adding those details Ray. Much appreciated.

Did you use it for benches only? Or the one-third percent mix was poured into media (with orchid roots within the media)?
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  #26  
Old 12-25-2021, 05:27 PM
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Thanks for adding those details Ray. Much appreciated.

Did you use it for benches only? Or the one-third percent mix was poured into media (with orchid roots within the media)?
No, the product was intended for plant contact.

The stronger versions were for disinfecting the area, including algae prevention.
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  #27  
Old 12-25-2021, 06:51 PM
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Thanks Ray.
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  #28  
Old 12-25-2021, 11:59 PM
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Where did YOU hear bad advice to spray orchid roots with hydrogen peroxide?
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I actually heard the advice here but never tried it. I heard about using Cinnamon on the roots (possibly here) and tried that and killed the roots of a Cattleya...was not happy (many years ago). Grr.
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  #29  
Old 12-26-2021, 09:38 AM
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I actually heard the advice here but never tried it. I heard about using Cinnamon on the roots (possibly here) and tried that and killed the roots of a Cattleya...was not happy (many years ago). Grr.
Very early on, I was a big proponent of the use of cinnamon, but always stressed that it should never be used on roots.
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