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View Poll Results: What is The IDEAL humidity level to grow a mixed collection

Voters
155. You may not vote on this poll
  • 40 - 50%

    14 9.03%
  • 50 - 65%

    76 49.03%
  • 65 - 75%

    56 36.13%
  • higher than 75%

    9 5.81%
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Relative Humidity

This is a discussion on Relative Humidity within the General Orchid Culture forums, part of the Orchid Culture category; Originally Posted by orchid-man It looks like I might have to consider trying to reduce ...

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  1. #11
    Brutal_Dreamer's Avatar
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    Quote Originally Posted by orchid-man View Post
    It looks like I might have to consider trying to reduce this high humidity,but things are growing well and with it this high I dont have to worry so much about the temperature highs.
    Hey Murray, I agree with Pavel, I would not change what is not broken. If your orchids are growing well for you in your conditions, leave them alone. You are the only person I have ever heard of that has an oncidium sharry baby without a single spot on the leaves - and in bloom.

    Cheers,
    BD

  2. #12
    smwboxer is offline Senior Member
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    I run a humidifier that I keep set at 40%. The humidity is usually in the 30%-40% range in the winter and little higher in the summer. I grow pretty much all species including masd. and a few mounted plants. I've only lost one plant in about 10yrs and that was from a fungal infection. Everyone bloom nice and regular.

  3. #13
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    I also voted 65-75%, as I believe most orchids thrive in humidity (better than water or misting to make up for lower humidity or substituting it).

  4. #14
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    If it's not broke don't fix it..........

  5. #15
    conjuay is offline Junior Member
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    I'm a RANK beginner, but I know my father-in-laws' old hydrometer is around here somewhere... once I find it, I'll check.

  6. #16
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    My spousal unit, because he is super talented and very frugal, built me a humidifier for my greenhouse. It gets overly hot over the summers, here in Waco, Texas. The humidifier cooled the temps in the gh, which was good. The one thing I have battled since is this black dust type mold growing on leaves of some of my dens, ascndas and phals. I wiped it off with Botani-wipes (haven't yet had a negative response from the phals, but I may just be playing Russian roulette). The humidity, according to the dial monitor, stays around 50 %. I keep the pleuros near the exit of the humidifier...kind of a micro clim. But, I am wondering if 50% is too high...considering it's relative and the readout is in the apex of the roof. Any ideas?

  7. #17
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    I voted for over 75% because that's the humidity here where I grow my orchids 24/7 outdoors. Only in the drier months Dec - Feb does the humidity fall below 75%.

  8. #18
    douglas is offline Member
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    Really, 50% humidity is not that hight. Texas is a relatively humid place in general (at least in the summer) but in my apartment the humidity is always around 70% (I use humidifiers too) and Phals typically like humidity around 70%.
    Do you have a fan running in the greenhouse to keep the air circulating on all of your plants. Perhaps the orchids that are suffering could use a fan of their own. And a weekly or biweekly misting with a ani-fungal could be a good idea too. There are some all natural organic ones out there.

  9. #19
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    Cool


    This is strictly all opinion on my part, having said that:
    Problem with polls is they are relatively generic, plus all "collections" are not the same. Nor is all medium, all temps & niether is just about everything else. If one is new at this I'd say start in the middle and figure it out from there.

    I grow outdoors except in cold snaps. Virtually all my specimens grow best when ambient humidity is +70% - +80%, What we call "summer" in the BiKiNi State. Once humidity falls off growth slows, blooms appear. I have mostly epiphites. Their existance is atmospherically based I find.

    As a consensus of others goes, If what you are doing now is doing well, for heavens sake, Do Not Change. What works for somebody else may not work at all for you. It may also work well or even better for you. But you can however, induce culture shock from even slightest of change, atleast in my opinion, especially during growing periods. Changing ambient humidity arbitrarily based on a poll or opinion in one, wide, swing may be bad.

    Although plant function is based in/on tropisims, it is niether ridgid nor that absolute. Some adaptation happens IF/When conditions moderate or change. This is within the morphology of all plants to varying degree. When instituting changes stage them out, do not just apply them wholesale. You'll be far more successful ultimately speaking. Acclimation is one of the tropistic traits all plants have. It is relative to the hardiness of the speciman of course.
    Interesting poll anyway, probably won't change my regimen because I'm not able to change Mother Nature. I do not forsee any glass house in my future either, LOL :-)

    CIAO
    DeLand Dad

  10. #20
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    voted for 50-65% humidity, unless it's summertime where humidity should be increase

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