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 8 of 8

Thread: Vanda denisoniana Orange FUNGUS?

Click here to increase the font size Click here to reduce the font size

Hybrid View

Previous Post Previous Post   Next Post Next Post
  1. #1
    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 Vanda denisoniana Orange FUNGUS?

    Help! I've had this orchid for almost 2 years. It has not bloomed for me yet and now this ugly ailment. What is it?

    Name:  image.jpeg
Views: 157
Size:  145.1 KBName:  image.jpeg
Views: 146
Size:  118.9 KB

  2. #2
    Real Name
    Zainal Abidin Bin Othman
    Favorite Orchid(s)
    Huntleya, Bollea, Cochleanthes
    Join Date
    Apr 2006
    Location
    Melaka, West Malaysia
    Posts
    14,968
    Member's Country Flag

    Default

    Waaa ... a bit difficult such a very pretty plant you got there better you cut off the yellow leaves and spray with fungicide keep him dry in between watering and isolate the plant. I wish it will work for you Sheryl.

  3. #3
    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

    Thanks Zain. I've been removing them as you can see and spraying with Neem. But it continues to spread up😪 I'll continue spraying and keep my fingers crossed 🙏
    Posted via Mobile Device

  4. #4
    Real Name
    Zainal Abidin Bin Othman
    Favorite Orchid(s)
    Huntleya, Bollea, Cochleanthes
    Join Date
    Apr 2006
    Location
    Melaka, West Malaysia
    Posts
    14,968
    Member's Country Flag

    Default

    Quote Originally Posted by Sheryl View Post
    Thanks Zain. I've been removing them as you can see and spraying with Neem. But it continues to spread up�� I'll continue spraying and keep my fingers crossed ��
    Posted via Mobile Device
    Be prepared in case in worst scenario they spreading upward get ready to cut the plant 1 to 2 inches below the aerial root and make sure the cutting surface is free from the disease.

  5. #5
    Real Name
    Arne Schon
    My Grow Area
    Under Lights
    Favorite Orchid(s)
    Brassavola, Broughtonia
    Join Date
    Jun 2014
    Gender
    Male
    Location
    Baltimore, MD, USA
    Posts
    831
    Member's Country Flag

    Default

    The exact same thing happened to my first two plants of V. denisoniana. In both cases it started a few weeks after they arrived in April and my guess is that the plants, which were not seed grown in the US, were used to warmer conditions. I finally got hold of a denisoniana grown from seed in the US and it is a very strong grower that doesn't show any of these tendencies. You should be able to save your plant I think but but you must be quick and you should try something more potent than neem oil. Try Thiomil or Cleary's 3336. Other than that, just follow Zain's advice.

  6. #6
    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

    Interesting! Thank you Arne!

    ---------- Post Merged at 01:47 PM ----------

    It has all those healthy roots below, but hope you can see the very large thick root mid plant. Should I cut a couple inches below that and not worry about detaching all those bottom roots! I'm wondering if it produced that nice root knowing something I didn't know!

    Name:  image.jpeg
Views: 92
Size:  93.4 KB

    Quote Originally Posted by zainal abidin View Post
    Be prepared in case in worst scenario they spreading upward get ready to cut the plant 1 to 2 inches below the aerial root and make sure the cutting surface is free from the disease.

  7. #7
    Real Name
    Arne Schon
    My Grow Area
    Under Lights
    Favorite Orchid(s)
    Brassavola, Broughtonia
    Join Date
    Jun 2014
    Gender
    Male
    Location
    Baltimore, MD, USA
    Posts
    831
    Member's Country Flag

    Default

    When you have come to terms with the worst case scenario, then cut 1-2 inches below the thick root on the upper part part of the plant. If there is a dark discoloration, sterilize the knife with a flame and cut again a bit higher up until it looks healthy. Be sure to use a flame.
    Discard the rest.
    Good Luck!

  8. #8
    Real Name
    Geoff Hands
    My Grow Area
    Greenhouse
    Favorite Orchid(s)
    Cattleya ?
    Join Date
    Oct 2010
    Location
    England, South coast.
    Posts
    4,366
    Member's Country Flag

    Default

    This is what happens to old fogies - bits fall off. Its happening to me right now... (joke). But seriously, it is just old age. Making a top-cutting is the answer, but beware, it will be some time before it is strong enough to flower again. Personally, since I am an antique, and won't last for ever - and people keep telling me I can't take "it" with me, I scrap plants like this, and go shopping for a replacement. What I ought to do, is just scrap them - since I am trying to rduce my overcrowding, but hey, that's too difficult. I can resist anything except temptation....

Similar Threads

  1. Vanda limbata X Vanda denisoniana X Vanda Naeem Ramatalley
    By JDT in forum Cattleyas, Vandas, Dendrobiums IN BLOOM
    Replies: 11
    Last Post: July 7th, 2018, 09:23 AM
  2. Vanda denisoniana x Vanda tessellata x Vanda Wilas
    By ksriramkumar in forum Cattleyas, Vandas, Dendrobiums IN BLOOM
    Replies: 8
    Last Post: July 16th, 2017, 08:41 PM
  3. Vanda (syn. Christensonia) vietnamica x Vanda denisoniana blooming again
    By Azizan in forum Cattleyas, Vandas, Dendrobiums IN BLOOM
    Replies: 4
    Last Post: July 15th, 2016, 01:07 AM
  4. Vanda limbata X Vanda denisoniana X Vanda Naeem Ramatalley
    By JDT in forum Cattleyas, Vandas, Dendrobiums IN BLOOM
    Replies: 3
    Last Post: May 19th, 2015, 10:27 PM
  5. Vanda tessellata var. semi alba and Vanda denisoniana "orange"
    By lanhua in forum Cattleyas, Vandas, Dendrobiums IN BLOOM
    Replies: 4
    Last Post: July 25th, 2012, 08:59 PM

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.