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  • 2 Post By catasetum-ian
  • 2 Post By mazlani
  • 1 Post By Carolla
  • 1 Post By Nataliwind
  • 3 Post By raybark

Why do bloom spikes die?

This is a discussion on Why do bloom spikes die? within the New Growers: Ask the Senior Members forums, part of the New Growers category; I've had a phal for about 2 years that has lost around 6 bloom spikes. ...

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  1. #1
    T4tlrman's Avatar
    T4tlrman is offline My name is Terry and I'm an addict ~
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    Unhappy Why do bloom spikes die?

    I've had a phal for about 2 years that has lost around 6 bloom spikes. Two were lost at the same time because I moved the plant too close to another pot and they snapped. That's no mystery -
    And I lost another because I tried to attach it to a support and it snapped Again my fault.

    But - I just lost two that were growing on it till this week. One was nearly a foot long, the other was about 2 inches. The green tips turned black, though the rest of the spike still looks translucent and healthy. At this point it's probably safe to assume they'll eventually shrivel and die...
    Why would they do that? It's a large leafed phal and it's growing a new leaf too. In all other ways, it looks very healthy. Any ideas?

    Thanks Maz., Cat & Carol, it's kept at a constant 78 degrees in bright filtered light with humidity ranging from 30 to 50 %. It's fed & watered regularly (fertilized with 19-8-16). That might be the problem...
    I'm reluctant to change anything because it's doing the best it ever has. Not discounting a fungal problem -

    Thanks, TName:  Phal 1.jpg
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    Name:  Withering Bloom Spike.jpg
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Size:  87.1 KB
    Last edited by T4tlrman; July 20th, 2014 at 01:58 PM. Reason: Added pictures

  2. #2
    catasetum-ian's Avatar
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    too many factors, fungal, bacterial, viral, antifungal treatments, problem with rooting system...any one of them or in combination may do so. sometimes it may be just the microenvironment isn't favorable for progress of the spike.
    sorry to hear about that, i do sometimes face the same problem for my catasetum, especially when they are throwing out too many spike and the plant decided to abort the last spike.
    let's wait till the next spike and hopefully it will bloom successfully.

  3. #3
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    In my case, It is usually due to high temperature.
    Posted via Mobile Device

  4. #4
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    Yes, also changes in temperature, the wrong humidity, stress of any sort. I lost flowers to leaving my orchids in my grooming shop in the garage overnight and forgetting to be sure the heat was on. They got a good chill and bye bye to a newly opened Catt flower and a spike on another Catt. (However the Physan treatment worked well and will be done again soon!)

  5. #5
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    That lower picture isn't a spike at all - it's an aerial root.

    They can quit growing due to lack of humidity, too strong of a fertilizer solution - any number of reasons.

  6. #6
    Carolla's Avatar
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    Yes, with the added picture, the plant looks good and that is an aerial root as Ray said. You won't get a lot of flowers on that one anyway! Sorry!

    The roots will stop for a number of reasons too, often just bumping the end of them is enough for them to quit, the growing tip is very sensitive.

  7. #7
    Nataliwind's Avatar
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    Quote Originally Posted by mazlani View Post
    In my case, It is usually due to high temperature.
    Posted via Mobile Device
    +1
    Just recently last 5 spikes on Bulb. Frank Smith. Only one had bloomed. It is too hot outside, some plants don't tolerate too hot conditions.

  8. #8
    T4tlrman's Avatar
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    Thanks Ray / Carol. I've never seen an aerial root 12" long and straight.

  9. #9
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    Unless there is something that doesn't show on the two pictures? I've had some pretty good aerials roots though over the years.

  10. #10
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    I was a vendor at a show a few years back, and a woman asked me why her plant does so well, puts out spikes like mad, but never blooms? I tried to delve into it more with her, to no avail, and she finally said "I'll come back later with a photo.".

    She did, and it was a huge phalaenopsis - had to have at least ten 12" leaves - with about a dozen aerial root staked straight up in the air!

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