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Thread: Phalaenopsis won’t grow spikes

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  1. #1
    My Grow Area
    Join Date
    Jul 2022

    Default Phalaenopsis won’t grow spikes

    I have two Phalaenopsis orchids
    For some reason can’t regrow spikes
    They are both on a window sill facing west
    Temp 60-70 degrees Humidity 50-60%
    Water level is medium
    Fertilize when I water
    Any help would be appreciated thank you
    Posted via Mobile Device

  2. #2
    Real Name
    Ray Barkalow
    My Grow Area
    Join Date
    Oct 2012
    Oak Island NC


    Most phalaenopsis grow best when really hot and humid. Your conditions are too cold, in my opinion.

    They will not reliable initiate new inflorescences, however, until they have been exposed to about 2 weeks of an average growing temperature reduction of 10-15F, then returned to the warmer conditions.

    Be clear it is a reduction in the average growing temperature, not a day/night variation as many will tell you.

    With your current 60-70 range - and average of 65 degrees - that would mean you’d have to expose it to a couple of weeks 50 to 55 degrees, and I try my best to never let phals get that cold.

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