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My Mcp. Thompsoniana won't flower

This is a discussion on My Mcp. Thompsoniana won't flower within the General Orchid Culture forums, part of the Orchid Culture category; New growths Looks healthy to me....

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  1. #11
    ksriramkumar is online now Senior Member
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    New growths Looks healthy to me.

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    Cifuentes910712 is offline Junior Member
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    well, I agree, it may be the photoperiod, it depends of the incidence of solar rays, is related with the part of the world you are, Myrmecophila is a tropical gender, it needs a lot of sun, humidity and sometimes the apex of the floral rod can be burned by the sun sometimes if the solar time is excessive.

  3. #13
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    Actually, those leaves look very pale to me. I flower these even in UK, in my greenhouse with several layers of 50% shade cloth on the roof.... I have seen them growing in private collections in Venezuela, collected from the rain forest, and I don't think it was that bright !
    Could it be that you are giving too much light ?

  4. #14
    PaphMadMan is offline Senior Member
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    Mcp. thompsoniana is from the Cayman Islands, about 20 degrees north of the equator. Its seasonality may be more likely to be tied to wet/dry cycle than strongly linked to day length. That is pretty similar latitude to Brisbane at 27 degrees south of the equator anyway, so day/night lengths aren't that radically different, with seasons flipped of course. It is known to be a spring/summer bloomer in native habitat, where it grows in full sun. Summers are relatively wet, winters are relatively dry with days nearly as hot as summer, but nights are slightly cooler. If it was my plant I would give it as much sun as possible, give it warm days in winter with reduced water, and I would stop fertilizing from late summer through late winter. I think it may need a dry seasonal trigger to flower, and that year round fertilizer and constant water may keep it in active growth rather than switching to flowering mode. Since other Mcp. come from other areas they may not all need the same seasonal differences.

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    paphioboy is offline Senior Member
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    Plant looks healthy but were there signs of old spikes on the previous pseudobulbs? If not, the plant has not yet grown bulbs large enough to flower. If there were, then you need to wait for the new growths to become equal in size to the bulbs which have flowered. Schomburgkia/ Myrmecophila require a lot of fertilizer and full sun (none/very little shade) to grow big bulbs.

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