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Leaf Problems

This is a discussion on Leaf Problems within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; Hi everyone, I have leaf problems on two separate plants. My questions are..... Plant A: ...

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  1. #1
    brit6v's Avatar
    brit6v is offline Senior Member
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    Default Leaf Problems

    Hi everyone,
    I have leaf problems on two separate plants.
    My questions are.....

    Plant A: Could someone please tell me what the yellowing leaves on my each of my two Encyclias are? I noticed the yellowing this morn. as I was watering. I repotted one plant 2-20-11 and the other 3-21-11. It crossed my mind this morn. that I could have been so focused on potting that I overlooked the yellowing, but I very seriously doubt that was the case. I can't imagine me missing something so obvious. The yellow areas show through to the underside of each leaf and where the green meets the yellow on some leaves, there is a crease very slightly mushy. There are new growths on each plant, but it's too early for me to tell if the yellowing is on them, as well. As far as I can tell, they look very healthy, though.

    Plant B: Could you also tell me what the brown area on only one of several leaves on my Bc. Little Marmaid 'Janet' is? The dark area shows through to the underside, but as you can see, the damage is more obvious underneath. I also repotted it on 2-20-11. I know that I could not have possibly missed seeing the problem then. It's way too obvious.

    I would appreciate your opinions and advice. I welcome any input.
    Vicki
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    Default

    I have this problem as well at the moment...I am attributing it to sunburn and probable mechanical damage from plants being blown over by the wind coupled with some sort of bacterial infection. As far as my own plants go, I am keeping them "dryish" and watching to see if the problem spreads...in the case that it does spread, I will cut away the affected parts and apply sulphur.

    PS...Hope you and yours weathered the storms alright! I am awfully jealous though...out here in CA, a slight shower is considered a storm...hardly impressive comparatively.

  3. #3
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    It appears like a fungal or bacterial infection. I suggest you use a fungicide and keep the plants on the dry side. It may be wise to cut the infected part with a sterilized tool.

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    I agree with Eric better cut it's seem that this organism very dangerous to me.

  5. #5
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    Looks like sunburn to me. Jason has given good advice. Injuries caused by burns can easily lead to to attacks by bacteria and fungus.

  6. #6
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    Hi Jason,
    I agree...you and I seem to have a similar problem. I began to wonder if my plants could have gotten a secondary infection from sunburn, as well, so I decided to cut the bad leaves off then spray with Phyton 27 this afternoon in case my guess was correct. No doubt you remember the Alabama heat and sun. Actually, we're not getting as many sunny days lately as I would like, but gee...when it's bright, it's really bright! I didn't know about treating with sulphur. I may try that next time (and trust me, I know there WILL be a next time, unfortunately). I gather sulphur has worked for you in the past, so that's good food for thought...thanks.

    Yes, we made it through the storms ok.....thanks. Needless to say, our storms are certainly are NOT on my list of fun things to participate in. As for jealous, "surely ye jest"! Yes indeed the stormy weather here is impressive, but I'll take your Ca. storms anytime.

    Thanks for your reply...and I hope your plants pull through just fine.
    Vicki

    Quote Originally Posted by cakedaddy View Post
    I have this problem as well at the moment...I am attributing it to sunburn and probable mechanical damage from plants being blown over by the wind coupled with some sort of bacterial infection. As far as my own plants go, I am keeping them "dryish" and watching to see if the problem spreads...in the case that it does spread, I will cut away the affected parts and apply sulphur.

    PS...Hope you and yours weathered the storms alright! I am awfully jealous though...out here in CA, a slight shower is considered a storm...hardly impressive comparatively.

  7. #7
    brit6v's Avatar
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    Hi Yew Sung,
    Thanks for your reply. Now that I've read your comment, I feel more confident that I was correct in treating my plants with a bactericide/fungicide.
    Vicki


    QUOTE=catttan;232025]Looks like sunburn to me. Jason has given good advice. Injuries caused by burns can easily lead to to attacks by bacteria and fungus.[/QUOTE]

  8. #8
    brit6v's Avatar
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    Hi Eric,
    I did exactly as you advised. Now that I've already treated them, I'll continue to do as you advise and keep them on the dry side.
    Thanks for your help,
    Vicki

  9. #9
    brit6v's Avatar
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    Thanks for your reply and advice!
    Vicki

  10. #10
    brit6v's Avatar
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    Just an update and one more question, please:
    As you advised, I cut the bad leaf areas off then sprayed the plants with Phyton 27 Sunday afternoon, as I told Jason. I really wasn't aware if they had gotten burned anytime but that's not to say that it hasn't happened. They've been in my greenhouse and I've had my shadecloth up for a few weeks but on the few sunny days we've had recently, the sun was very bright. Maybe they weren't acclimated to that much sun yet (just a theory). ??

    The reason I chose Phyton 27 is because I understand that it treats both bacterial and fungus diseases, which you mentioned was also a possibility. In any case, I have both plants isolated from my other orchids until I find out more about Phyton 27. I've never used it until these problems occurred, so I don't know if I should spray the plants again with it. ?? If I should, neither do I know how many more times, of course.....or if the one time is all that's necessary. ?? Do you have experience with it? If so, I would appreciate it if you will let me know.
    Vicki

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