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Dendrobium subacaule

Discussion in 'Orchid Species' started by Josh H, Sep 2, 2016.

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  1. Josh H

    Josh H Member

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    Dendrobium subacaule purchased as a small division on eBay over a year ago. This is its first blooming for me. It is grown mounted on compressed cork board with a small amount of NZ sphagnum moss around the roots (and the obligatory carpet moss that seeds itself). Daily watering with low dissolved solid count water (30-35 ppm). Grown under LED lights along with my D. cuthbertsonii, and therefore receiving similar temps. The plant was slow to get started but in the past few months has picked up speed in putting out new growths. Flowers are short lived when compared with D. cuthbertsonii or other Oxyglossum species, but still last several weeks before starting to fade.
     
    jai likes this.
  2. KellyW

    KellyW Orchid wonk Staff Member Supporting Member

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    Josh, welcome to Orchids Forum. You have an enviable collection of Oxyglossum Dendrobiums. I hope you become a regular here. We have a number of tank growers on this site.

    This subacaule is a beautiful shape and color. Are the leaves reddish due to light level or does this species typically have that pigment?
     
  3. Josh H

    Josh H Member

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    Yes, I do believe the light levels stimulate more red pigment in the foliage than would be seen otherwise in this plant. I've seen other clones of this species that have much more of the standard green foliage one would expect of most Dendrobiums. I would be curious to do a study at some point on the cultural effect of LED vs. standard lighting on foliage and flower color, but I lack the space to set something like that up currently.
     
  4. Marni

    Marni Well-Known Member Staff Member Supporting Member

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    No matter what color your foliage is, the flower color is fantastic. Welcome to the forum.
     
  5. naoki

    naoki Well-Known Member

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    Amazing! What kind of temperature are you using for this, and how are you regulating it?
     
  6. sam1147

    sam1147 sam1147

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    Awesome
     
  7. Josh H

    Josh H Member

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    Thanks everyone! Naoki, I keep this right alongside my D. cuthbertsonii which means that in the summer months it gets as high as 78F during the day and drops to around 62 F at night, while in the winter it can drop to 55F at night. I grow indoors in my basement in a grow tent and use a home-made evaporative cooler to help drop the nighttime temps below ambient room temp. The evaporative cooler comes on a few times during the day to help dissipate the heat of the LED lighting inside the tent.
     
  8. naoki

    naoki Well-Known Member

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    Sounds like a nice setup! Whenever you get a chance, it would be nice to see your post about the DIY evaporative cooler (maybe in a separate thread or something). I'm also a grow tent user (for intermediate and warm orchids), and sometime it would be nice to lower the temp a bit. Heat issue from light became less problematic since I've mostly migrated to high-efficiency DIY COB LEDs, but I would like to create a bit lower temp, too.
     
  9. Josh H

    Josh H Member

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  10. jai

    jai Orchid addict

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    The colors...
    Magnificent, very nicely grown