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I Do Believe Vandaceous Orchids Love High Humidity

This is a discussion on I Do Believe Vandaceous Orchids Love High Humidity within the General Orchid Culture forums, part of the Orchid Culture category; In my naturally dry High Desert environment I find that many, though not all of ...

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  1. #1
    orchidsal's Avatar
    orchidsal is offline Senior Member
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    Default I Do Believe Vandaceous Orchids Love High Humidity

    In my naturally dry High Desert environment I find that many, though not all of my Vandaceous really do need 70% RH or more to perform well and stay healthy. I can maintain this for much of the year, but come late fall or winter between cold temps and high winds I probably average 50% to 60%. Occasionally a bit more humidity and occasionally a bit less. I was watering Twice a day for over a year and a half. Now I mist very heavily X 1 and hours later I dunk water in a very large tub I have for this purpose as my green house floor is not mean't to take large floods of hose water. The misting does increase humidity if only for a few hours each day. I have read many times that Vanda's can do fine on 50% or 60% humidity, but long term I can only say that some do, some don't. This is my experience. If any of you in northern latitudes or dry desert areas have Vanda's were your experience is different from mine, I'd be pleased to hear about it. My green house temps. are 62 degrees F. to 81 degrees F. the year round so there very moderate. Thanks in advance for your input! AL

  2. #2
    coeruleo's Avatar
    coeruleo is offline Night Bloomer
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    Default

    i live in southern california. it is very dry here, and vandas, as well as any bare root or mounted orchid, are a struggle. they often have fewer leaves than they should, and look a bit withered. hard to keep in good condition, but sometimes flower. other orchids don't seem to have as much difficulty. i mist a lot, but they do better if kept in a bark mix in a plastic pot.

  3. #3
    orchidsal's Avatar
    orchidsal is offline Senior Member
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    All your observations seem accurate and well taken by me coeruleo. Definitely 'other orchids' do alot better with lower humidity. I have tried wooden baskets or plastic pots with bark mix and I agree that intially the Vandas do better this way. Over the course of afew years though I find their much more prone to root rot and bacterial infections. Once a infection takes hold its rare you can save the Vanda. I may have to really saturate the air with a misting system on a automatic timer that is directed near, but not on the orchids. Thanks so much for your in put coeruleo. It's nice to see someone has to deal with the same problems and still carry's on........................AL

  4. #4
    Carolla's Avatar
    Carolla is offline Senior Member
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    Default

    I pretty much don't try Vandas with my low humidity. As I don't have a green house and no misting system, my usual humidity of 20-40% would be a real problem. I had a Motara (I think that is right? a Vanda cross?) that thrived and bloomed until I repotted into the wrong media - it was supposed to be large bark, but packed down around the roots. It was gone in a week. I'd try that one again though, it had very happy little yellow flowers and was easy to grow, other than being very fussy with rooting media. It did get spots pretty easily though, needed good air circulation.

  5. #5
    orchidsal's Avatar
    orchidsal is offline Senior Member
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    Coeruleo; There is one thing I hesitate to mention, but maybe it could be helpful to you. The Vandas that I hang over my large tropical bush's seem to do much better than those that hang over my other orchid benchs even where the orchid roots on the Vandas don't drape into the bush leaves much. I do not think the humidity is much more in this area of the green house if at all, but they seem to like it better....................If I had room I'd probably try them all this way...........................AL

  6. #6
    78Terp's Avatar
    78Terp is offline An Avant Gardner
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    I think I will forgo buying any Vandas (unless I run into v. Tricolor!) as my home environment, while improving, is still low in humidity. When I am home during the day, I mist regularly. Even though my 55 gallon fish tank evaporates 5 gallon/week, it barely makes a difference in the humidity.

  7. #7
    catttan's Avatar
    catttan is offline Senior Member
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    Yes vandas love high humidity. In our country the humidity is almost always above 80% and even this is not enough for the strap leaved vandas and we have to keep foliage plants under them or keep the space below them moist.

  8. #8
    78Terp's Avatar
    78Terp is offline An Avant Gardner
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    I expect that most of everyone here spends most of their leisure time thinking/doing orchids. I know I do. Since the bug took hold, it's all I can think of!

    Help! LOL

  9. #9
    orchidsal's Avatar
    orchidsal is offline Senior Member
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    Thanks Yew for posting as you did. I thought 70% to 80% humidity would be enough and maybe at my moderate temps it is. I sometimes thought it might not be fair to the orchids or me to raise Vanda's here. I now see that their a challenge in other more tropical parts of the world also. It makes me feel I can keep on trying to do the right thing by them. AL

    ---------- Post Merged at 10:44 AM ----------

    I also am tempted by V. Tricolor Harvey.If things go well I know where I can get one in the spring. Great quality orchids, but a bit pricey. V. Tricolor is worth the expense though. AL

  10. #10
    Anteater is offline Senior Member
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    I have one Vanda, and won't get another unless I can get this one to bloom. I may not even get another if it does bloom. I live in high desert with virtually no humidity. If there was any orchid that I have grown that needed to be mounted instead of in a pot, this would be it, judging by how it grows. However, even if I was able to have mounted orchids, I'm sure it would suffer/die here, because I don't have the humidity for it, and don't have the time or resources to provide what it needs. This is a very finicky orchid for me. It will spit out a few leaves, new roots come flying out, and the litttle nubs start inside the base of the leaves, and then it turns its nose up at me, the nubs die, and the roots stop growing. It is quite a primadonna. I know it sure does not like drying out at all.

    Sounds like you have better conditions though.

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