Shop Orchid Care OrchidTalk Orchid Forum Weather Station Links Nursery

Welcome to OrchidTalk Orchid Forums


The Friendliest Orchid Community on the Internet!


  •  » Learn to Repot your Orchids
  •  » Learn Orchid Care Tips and Secrets
  •  » Find the perfect Orchid for your Growing Environment
  •  » Chat with Orchid Growing Professionals

OrchidTalk - "Bringing People Together to Grow Orchids Better!"


Let us help you grow your Orchids better; Join our community today.


YES! I want to register an account for free right now!


Register or Login now to remove this advertisement.

Results 1 to 8 of 8

What is this??

This is a discussion on What is this?? within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; I noticed this on two plants, one leaf each...they live next to each other. There ...

Click here to increase the font size Click here to reduce the font size
  1. #1
    mtequine's Avatar
    mtequine is offline Senior Member
    Real Name
    Jenny
    My Grow Area
    Windowsill
    Favorite Orchid(s)
    Catts, paphs
    Join Date
    Apr 2006
    Location
    Colorado
    Posts
    947
    Member's Country Flag
    Recipes
    2

    Default What is this??

    I noticed this on two plants, one leaf each...they live next to each other. There has been no change in conditions...it has not gotten below freezing in my house...yikes, what is this??

    Vuyl. Melissa Brianne 'Shady Lady'
    Oncid. Ornithorhynchum

    I've had these plants for over a year, they have not been repotted and have seemed to be relatively happy (new growth although not blooming). Both are in S/H.

    Thanks for any input!
    Attached Images Attached Images    

  2. #2
    Becky15349's Avatar
    Becky15349 is offline Senior Member
    Real Name
    Rebecca Luce
    My Grow Area
    Windowsill
    Favorite Orchid(s)
    Cattleya!!
    Join Date
    Mar 2007
    Location
    Chicago, IL
    Posts
    1,790
    Member's Country Flag

    Default

    To me, the purplish color looks like some sort of toxicity- however, i've also read that orchids will frequently start to produce purplish spots/discoloration because they are getting too much light and are trying to protect themselves from burning- could that be what it is?

  3. #3
    pavel's Avatar
    pavel is offline change is the only constant
    Favorite Orchid(s)
    whatever will bloom
    Join Date
    May 2005
    Location
    Michigan
    Posts
    8,643
    Member's Country Flag

    Default

    The "wet" looking area looks like a bacterial infection. Cut off the leaf with a sterile blade then treat the cut with cinnamon powder. If it continues treat with a systemic bacteriacide/fungicide

  4. #4
    Brutal_Dreamer's Avatar
    Brutal_Dreamer is offline Dreaming with my eyes open...
    Real Name
    Bruce Brown
    My Grow Area
    Greenhouse
    Favorite Orchid(s)
    Cattleyas & Slippers
    Join Date
    Mar 2003
    Gender
    Male
    Location
    Arkansas
    Posts
    34,003
    Member's Country Flag

    Default

    to what Pavel said. Cut the leaf off below the infected area. No need to cut the entire leaf, just go about an inch below the infected area. Be sure to seal the cut.

    Cheers,
    BD

  5. #5
    Piper's Avatar
    Piper is offline Hangs
    Join Date
    Dec 2004
    Location
    Massachusetts
    Posts
    7,068

    Default

    I'd even suggest a Physan spray. I get that type of rot/fungus from time to time. You might want to up the air flow. Stick a fan on that area of plants. That's great at preventing these little nasties.

    McHardToTypeWithACatDemandingAttentionBetweenMeAnd TheKeyboard

  6. #6
    mtequine's Avatar
    mtequine is offline Senior Member
    Real Name
    Jenny
    My Grow Area
    Windowsill
    Favorite Orchid(s)
    Catts, paphs
    Join Date
    Apr 2006
    Location
    Colorado
    Posts
    947
    Member's Country Flag

    Default

    Thanks all....I did in fact cut the leaves to the point and seal them. Need to get the courage up to spray w/physan...I'm such a wimp. I had it out last weekend but looked at the "scary" instructions and warnings and put it back away! LOL

    I've noticed now that the heat is on less the air flow is a problem, will set a fan up and see if that helps.

    Again...many thanks!

  7. #7
    Piper's Avatar
    Piper is offline Hangs
    Join Date
    Dec 2004
    Location
    Massachusetts
    Posts
    7,068

    Default

    Jenny,

    I was freaked by the Physan label at first, also. I have two cats and didn't want it even in the house.

    But it is safe indoors at the recommended spray dilution. I keep a spray bottle around, and always spray plants in the bath tub, which I can rinse well afterwards. So far none of us have grown three heads!

    McJulieJulieJulie

  8. #8
    mtequine's Avatar
    mtequine is offline Senior Member
    Real Name
    Jenny
    My Grow Area
    Windowsill
    Favorite Orchid(s)
    Catts, paphs
    Join Date
    Apr 2006
    Location
    Colorado
    Posts
    947
    Member's Country Flag

    Default

    LOL McThreeheadedorchidexpert.....

    Well, I found two cool little inexpensive fans at the big box store last week and have them set up. Plus, I got the courage up and hit the worst of my fungus/bacterial/whatever this is plants with physan this morning. Took them out in the laundry room, opened the windows and sprayed them in a five gallon bucket and left them there until they were dry.

    Hopefully we'll be good to go, and the aussie pup, the parrots and I will be no more mutated than we already are!

    It's amazing what a difference this in between spell with the heat/temps has made to my growing conditions!! This house has radiator/hot water heat and the light isn't as good as my other house. So, when it warmed up for a couple weeks the heat didn't run much at all, but it wasn't warm enough to have the windows open. I had fungus growing on potting medium, this bacterial problem, and was watering LESS than once a week for many of my plants as they just weren't drying out. Fans are good!



    Quote Originally Posted by Piper View Post
    Jenny,

    I was freaked by the Physan label at first, also. I have two cats and didn't want it even in the house.

    But it is safe indoors at the recommended spray dilution. I keep a spray bottle around, and always spray plants in the bath tub, which I can rinse well afterwards. So far none of us have grown three heads!

    McJulieJulieJulie

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
OrchidTalk --An Orchid Growers Discussion Forum brought to you by River Valley Orchidworks. A World Community where orchid beginners and experts talk about orchids and share tips on their care, cultivation, and propagation.