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  • 2 Post By PaphMadMan
  • 1 Post By Monks-in-Miami
  • 1 Post By JDT

Help! What's wrong with these orchid leaves??

This is a discussion on Help! What's wrong with these orchid leaves?? within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; Over the last few weeks, I've noticed a few different types of leaf "discoloration" in ...

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  1. #1
    Monks-in-Miami is offline Senior Member
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    Default Help! What's wrong with these orchid leaves??

    Over the last few weeks, I've noticed a few different types of leaf "discoloration" in some of my phals and dendrobiums. I don't think it has to do with the amount of sunlight that they are receiving since they have all been in their same respective locations for months. Otherwise, the leaves are all firm and not wilted. Any help would be appreciated.

    Seen on a couple of my dendrobium and catteleya hybrids (a blotchy, inconsistent coloration):

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    Name:  Orchid leaf2 9-16.jpg
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    Seen on a few of my phals:

    Attachment 82614
    Name:  Orchid leaf4 9-16.jpg
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    Attached Images Attached Images  

  2. #2
    Traci's Avatar
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    Have you had any
    New purchases recently? I'm worried about the phal leaves. I have seen plants drop those
    Leaves and then fade away. Not sure what causes it though. I had one I treated with physan 20 and it didn't help. Treated another with peroxide solution. It didn't help either.
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  3. #3
    Chris in Hamilton's Avatar
    Chris in Hamilton is online now Senior Member
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    Are you sure you're watering enough Monique? I ask because the Phal roots look a mite shriveled. The medium with the Phal appears to be a mix that I would be giving a good soaking every couple of days. Catts twice a week in pots 4" and up, smaller pots in a similar mix get a drench every second-third day when growing and depending on the weather. I cut back to about half that number of times during the winter.

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    PaphMadMan is offline Senior Member
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    You may have 2 or 3 different problems going here.

    The last picture really seems to be pretty typical sunburn. It can happen in fall as the sun changes angle in the sky and different parts of the leaves get direct sunshine than they did with the sun high in the sky in summer. See how the yellow areas are all aimed in the same general direction? It is usually the result of the leaf getting hot rather than a direct result of more intense light, one bright but breezeless afternoon in fall can do it.

    The picture before it may be the same thing. That leaf definitely looks dehydrated though, indicating there might be more going on.

    The first and second pictures could be a nutrient deficiency, magnesium maybe, especially in the second. What is your fertilizer program?

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    Monks-in-Miami is offline Senior Member
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    Quote Originally Posted by Chris in Hamilton View Post
    Are you sure you're watering enough Monique? I ask because the Phal roots look a mite shriveled. The medium with the Phal appears to be a mix that I would be giving a good soaking every couple of days. Catts twice a week in pots 4" and up, smaller pots in a similar mix get a drench every second-third day when growing and depending on the weather. I cut back to about half that number of times during the winter.
    I don't think watering is the problem Chris. We are in the rainy season here in South Florida so we are getting soaking rain at least 2-3 times a week.

  6. #6
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    What about fungal ... fusarium?
    Posted via Mobile Device

  7. #7
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    Quote Originally Posted by Monks-in-Miami View Post
    I don't think watering is the problem Chris. We are in the rainy season here in South Florida so we are getting soaking rain at least 2-3 times a week.
    I don't know where in Miami you are but here in Cooper City we have been getting rain everyday for the last 10 days. I would agree with Kirk on the sunburn, remember our sun is moving south of where it was during the summer.

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