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View Poll Results: Is there such a thing as too much light for vandas?

Voters
24. You may not vote on this poll
  • Yes

    14 58.33%
  • No

    2 8.33%
  • No, except if you have a V. coerulea hybrid

    1 4.17%
  • It depends

    7 29.17%
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Results 11 to 14 of 14

Thread: Vanda alliance - how much light can they really take?

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  1. #11
    Real Name
    Geoff Hands
    My Grow Area
    Greenhouse
    Favorite Orchid(s)
    Cattleya ?
    Join Date
    Oct 2010
    Location
    England, South coast.
    Posts
    4,366
    Member's Country Flag

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    The strap-leaved Vandas are grown under 50% shade cloth in Thailand , where an enormous number are raised. Semi-terete and terete need much more so I believe, so much so that they are not sold in UK. But the strap-leaved ones grow well here. BTW I reckon that cattleyas need at least 50% more light, if that is any help.

  2. #12
    Real Name
    Greg
    My Grow Area
    Outside 24/7
    Favorite Orchid(s)
    vanda
    Join Date
    Nov 2022
    Gender
    Male
    Location
    Chiang Mai, Chiang Mai Province, Thailand
    Posts
    26
    Member's Country Flag

    Default

    Our summer sunlight here in Thailand can absolutely burn up orchid plants. The sunlight can be way too intense. Almost all growers here use shade cloths of 95% to 50% sun blockage.

  3. #13
    Real Name
    Arne Schon
    My Grow Area
    Under Lights
    Favorite Orchid(s)
    Brassavola, Broughtonia
    Join Date
    Jun 2014
    Gender
    Male
    Location
    Baltimore, MD, USA
    Posts
    813
    Member's Country Flag

    Default

    Well, why do people always associate mainly Vanda with high light? There are many Cattleya alliance species/hybrids that need as much or even more. Rhyncholaelia digbyana doesn’t bloom if it doesn’t get enough light. The same applies to C aclandiae and walkeriana, for instance.
    Posted via Mobile Device

  4. #14
    Real Name
    Ray Barkalow
    My Grow Area
    Porch/Patio.
    Join Date
    Oct 2012
    Location
    Oak Island NC
    Posts
    2,087

    Default

    Just a guess: Your examples are certainly correct, but looking at the genus as a whole (and let's not forget that papilionanthe was lumped in with them), vandas need more light than do cattleyas

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