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Den goldschmidtianum and Den bullenianum cold tolerance

Discussion in 'Orchid Culture' started by PerpetualIrish, Jul 21, 2020.

  1. PerpetualIrish

    PerpetualIrish New Member

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    Ive seen these listed as hot to warm growers, has anyone grown them cool? 50-65 are my winter temps. Den gnomus has similar conditions and it grows extremely well for me cold. Thanks!
     
  2. Ray

    Ray Orchid Iconoclast Supporting Member

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    According to the Baker Culture sheets, D. goldschmidtianum sees mid-, to upper 60’s December through March, but D. bullenianum never sees below 70.
     
  3. PerpetualIrish

    PerpetualIrish New Member

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    Kind of what I had figured. Perhaps I will see about some divisions and see if they can handle the cold. My cold may be a little too extreme over the winter.n THanks!
     
  4. Raven

    Raven Well-Known Member

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    I grow goldschmidtianum with 56 F minimum nights in winter and it does well
     
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  5. PerpetualIrish

    PerpetualIrish New Member

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    Awesome. I was hoping to hear something like this. Thank you
     
  6. Roberta

    Roberta Member

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    I have a plant labeled Den. miyakei which is supposedly a synonym for Den. goldschmidtianum, but it stays smaller than the D. goldschmidtianums that I have seen, and is very cold tolerant (like the occasional near-freezing night on my patio) Is it really a separate species? Or just from a different, higher elevation, population? I don't know... but it is certainly more cold-tolerant than Den. goldschmidtianaum is reputed to be.
     
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  7. DarleneJay

    DarleneJay Well-Known Member

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    I am guessing you would need them to be on the drier side for those cooler nights.
     
  8. Roberta

    Roberta Member

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    I water everything less in the winter, and water only in the morning so things have a chance to dry somewhat by evening, but I don't give this one any particular special treatment. It's in a basket with loosely-packed sphagnum, so drying is pretty efficient, but it doesn't get as dry as a mounted plant would. If it rains (which happens occasionally, not as often as we'd like) it gets rained on. And it blooms regularly, several times a year.

    I've had it for about 7 years. If its culture were more ideal it would probably get bigger - the canes typically don't get to be much more than 10 inches (25 cm), then they lose leaves and new ones come along. Flowering is only on the leafless canes. I love the compact size... no more room for big plants.
     
    Last edited: Aug 9, 2020