Orchid Care OrchidTalk Orchid Forum 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 6 of 6

Thread: Aussie Dendrobium Speciosum sunken pits on leaves

Click here to increase the font size Click here to reduce the font size
  1. #1
    Real Name
    Jude
    My Grow Area
    Outside 24/7
    Join Date
    Jul 2019
    Gender
    Female
    Location
    Northern New South Wales, Australia
    Posts
    22
    Member's Country Flag

    Default Aussie Dendrobium Speciosum sunken pits on leaves

    Hi
    Can anyone help me identify the cause of the sunken pits on my Speciosum leaves? I cannot see any scale. I thought it might be marks they can naturally get on older leaves but I think this is definitely something else.

    Thanks Joodles
    Name:  3CCB3380-4587-41C1-ADFA-A0100F921321.jpeg
Views: 345
Size:  155.4 KB

  2. #2
    My Grow Area
    Outside 24/7
    Favorite Orchid(s)
    All of them
    Join Date
    Oct 2015
    Gender
    Female
    Location
    Port Orange, Florida
    Posts
    5,155
    Member's Country Flag

    Default

    Sorry I can't help but am curious to know the answer.

  3. #3
    Real Name
    Ray Barkalow
    My Grow Area
    Porch/Patio.
    Join Date
    Oct 2012
    Location
    Oak Island NC
    Posts
    2,103

    Default

    Almost certainly an acidovorax (pseudomonas) infection, and highly contagious. A topical spray of quaternary ammonium compounds (Physan, for example) can help. For a systemic treatment, copper compounds are effective, although you're not supposed to use copper on dendrobiums.

  4. #4
    Real Name
    Jude
    My Grow Area
    Outside 24/7
    Join Date
    Jul 2019
    Gender
    Female
    Location
    Northern New South Wales, Australia
    Posts
    22
    Member's Country Flag

    Default

    Thanks Ray. Sounds pretty scary. I posted some repotting question to senior members about this plant. You can see the whole plant and her issues. No response yet. So should I cut the leaves off as well?

  5. #5
    Real Name
    Ray Barkalow
    My Grow Area
    Porch/Patio.
    Join Date
    Oct 2012
    Location
    Oak Island NC
    Posts
    2,103

    Default

    If I am not mistaken, it is a topical disease, so if you've disinfected the plant, it should be stopped. Those affected leaves will eventually drop, but removing them early appears to be more of a decision based upon aesthetics than anything else.

  6. #6
    Real Name
    Jude
    My Grow Area
    Outside 24/7
    Join Date
    Jul 2019
    Gender
    Female
    Location
    Northern New South Wales, Australia
    Posts
    22
    Member's Country Flag

    Default

    Thanks. I’ll leave them on. ha ha!

Similar Threads

  1. Aussie Dendrobium Speciosum repot
    By Joodles in forum New Growers: Ask the Senior Members
    Replies: 4
    Last Post: August 2nd, 2019, 09:42 PM
  2. Dendrobium speciosum
    By JDT in forum Cattleyas, Vandas, Dendrobiums IN BLOOM
    Replies: 9
    Last Post: February 7th, 2015, 01:07 PM
  3. Dendrobium speciosum
    By chowie in forum Cattleyas, Vandas, Dendrobiums IN BLOOM
    Replies: 5
    Last Post: September 12th, 2012, 01:24 PM
  4. Need a help on Dendrobium Speciosum!!
    By steven_long in forum Genus Specific
    Replies: 16
    Last Post: April 29th, 2011, 04:06 PM
  5. Dendrobium speciosum
    By Diane in forum **NOT IN BLOOM** All Genera
    Replies: 11
    Last Post: June 9th, 2006, 12:21 AM

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.