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Temperature ranges - Cool

Discussion in 'Orchid Culture' started by Jon, Dec 27, 2010.

What temps do you use for cool growing orchids?

  1. Max - lower 70s (>21 C)

    8 vote(s)
    44.4%
  2. Max - 70f (21C)

    3 vote(s)
    16.7%
  3. Max - 68f (20C)

    1 vote(s)
    5.6%
  4. Max - 66f (19C)

    0 vote(s)
    0.0%
  5. Max - 64f (18C)

    0 vote(s)
    0.0%
  6. Max - 62f (17C)

    0 vote(s)
    0.0%
  7. Max - 60f (16C)

    1 vote(s)
    5.6%
  8. Max - upper 50s (<=15C)

    1 vote(s)
    5.6%
  9. Min - lower 60s (>=17C)

    1 vote(s)
    5.6%
  10. Min - 60f (16C)

    2 vote(s)
    11.1%
  11. Min - 58f (14C)

    2 vote(s)
    11.1%
  12. Min - 56f (13C)

    1 vote(s)
    5.6%
  13. Min - 54f (12C)

    1 vote(s)
    5.6%
  14. Min - 52f (11C)

    1 vote(s)
    5.6%
  15. Min - 50f (10C)

    4 vote(s)
    22.2%
  16. Min - upper 40s (<10C)

    4 vote(s)
    22.2%
  17. Other - Please specify below

    1 vote(s)
    5.6%
Multiple votes are allowed.
  1. Paul J

    Paul J New Member

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    Alexis, you may have more success in plant recuperation than many would expect. Much depends upon whether there was any cooling period prior to the cold snap. If they had a chance to acclimate then there should be minimal damage, but if it was a sudden cold without the plants experiencing a seasonal cool-down (below 60F) then there may be cause for concern. Also, plants wet or plants dry makes a big difference when the temp drops. In previous winters my diversity of "intermediate" and "warm" growers survived and thrived after several c.40F temps each season, when normal GH winter temps were often in the upper 50sF [still 50-70 degrees warmer than outside static air temps!].
     
  2. Kyle

    Kyle Member

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    Location:
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    I can see that this poll is being scewed. My minimums go to 10-13 C in the winter. 19-21 C in the summer. I agree night time is the most important thing. When I worked at Ecuagenera, the night temps were 7-9 C and the day temps were unbareable, around 30C. Draculas and masdevallias did just fine with no special attention.

    Kyle
     
  3. Marni

    Marni Well-Known Member Staff Member Supporting Member

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    Location:
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    Alexis, how have your plants done?
     
  4. Jon

    Jon Mmmm... bulbophyllum...

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    I'm just kidding around, Marni. I don't hate the forum at all. Quite the opposite actually.

    I added a "other" option to the poll.

    Thanks for participating, everyone. I'm trying to get a cool growing area together, and I'd like to know what kinds of temps people have for pleurothallids, den cuthbertsonii, etc.
     
  5. Uluwehi

    Uluwehi angraecoids, dendrobiums and more Supporting Member

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    My "other" vote is for a max of 80°F/26.6°C
     
  6. orchidkarma

    orchidkarma Member

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    Location:
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    I love you people!! :p
    My cool viv ranges from: Night = 8-10 C (winter), 12-14 C (summer). Day = 18-20 C (winter), 20-22 C (summer). My focus is to keep night time temps down.
     
  7. Alexis

    Alexis New Member

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    Location:
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    I think I got pretty lucky. Only 20 plants appear to be dead; and almost every plant has lost a few, or many, leaves. It could have been worse. I think the fact that the plants were BONE dry really helped them withstand the temps. Those that appear dead will stay in place until spring, in the event they have enough reserve strength of push new growth.

    Sorry Jon, for hijacking. :eek:
     
  8. orchidkarma

    orchidkarma Member

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    Great to hear most of your plants made it through the scare OK.
     
  9. Marni

    Marni Well-Known Member Staff Member Supporting Member

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    Alexis, always sorry to hear about losses and am glad is wasn't a total disaster.
     
  10. Armando

    Armando Hobbyist gone wild

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    Location:
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    Alexis sorry to hear about your losses.

    I don't grow cool growers, the best range I can keep in the GH is 55-99.
     
  11. Jon

    Jon Mmmm... bulbophyllum...

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    It kind of sounds like a vivarium with minimum temperatures of 57 won't be low enough, correct?
     
  12. Marni

    Marni Well-Known Member Staff Member Supporting Member

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    I would call 57F an intermediate range. So plants that are 1200m and above. Very high elevation species probably wouldn't do well. When I was growing with 50-52F minimum night, I noticed I could grow most things that came from 1500m and above. What is it you want to grow?
     
  13. Jon

    Jon Mmmm... bulbophyllum...

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    I'd like to keep things like bulbo reevei, den cuthbertsonii, bulbo hians, some cooler masdies, lepanthes lucifer, etc etc etc. My GH doesn't get cool enough to cultivate many of these speices very well; especially in the summer.
     
  14. Marni

    Marni Well-Known Member Staff Member Supporting Member

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    Location:
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    I grow these at 56f: bulbo reevei, den cuthbertsonii, bulbo hians, lepanthes lucifer. Which masdevallias do you consider cool?
     
  15. Jon

    Jon Mmmm... bulbophyllum...

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    I hadn't really considered. I just hate to see things that look awesome only to find out they're too cool for my conditions. I'll see what I can do with what I have.

    Thanks Marni.
     
  16. Neal

    Neal ***** Newbie

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    Location:
    SF Bay Area
    Cool

    I grow mostly Odonts, including a large number of "crispum" style Odm and Oda. These are plants that are definitely considered "cool" growing. My temps are 48 - 80, with general lows in the low 50s and general highs in the upper 70s, highs may occasionaly exceed 80 for short periods. One of the keys is that summer night temps are right around 60, often a little lower, so there are always cool evening and night temps. I keep high air movement in the house and keep the humidity as high as possible (sometimes difficult here in Calif). Many plants are watered daily in periods of high temperatures and some of my plaques get watered morning and evening. The results are generally very good. While you might think you could grow your Catts in this house (temperature wise), they probably would not be happy with the relatively low light levels.
     
  17. Aceetobe

    Aceetobe Member

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    Location:
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    Andy does cuthbertsonii quite well, along with disa uniflora, odontoglossum nobile, and crispum. My Masd coccineas took 110 this year, and didn't drop a leaf. If you have enough air movement they can take a lot larger temp ranges than you think.

    http://www.weather.com/weather/wxclimatology/monthly/graph/USCA0982

    As emphasized before, night temps are more important than day. my friend did manage to grow disa uniflora outdoors in Sacramento where he had 35 days in a row of 100F+ weather, but fairly cool nights