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.

Page 2 of 2 FirstFirst 12
Results 11 to 20 of 20
Like Tree8Likes

yellow leaves w/ black spots

This is a discussion on yellow leaves w/ black spots within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; Hi Jason, The problem seems to have cured itself after I trimmed the leaves and ...

Click here to increase the font size Click here to reduce the font size
  1. #11
    brit6v's Avatar
    brit6v is offline Senior Member
    Real Name
    Vicki
    My Grow Area
    Greenhouse
    Join Date
    Aug 2008
    Location
    Alabama
    Posts
    395
    Member's Country Flag

    Default

    Hi Jason,
    The problem seems to have cured itself after I trimmed the leaves and applied cinnamon to the cut edges. I still have the plant quarantined here in our house away from my others in the greenhouse, just to watch it a bit longer.

    I have another question for future similar incidents, please. I haven't found the Bayer products you mentioned, other than a concentrated 3- in- 1 to be attached to a garden hose. The salesperson recommended a different product and said that it should be fine, as well. I had a piece of notepaper in my purse, so I wrote the info down that was listed on the bottle. I wanted to ask if you -or anyone- are familiar with it before I buy it. It is "Garden Safe Fungicide3-fungicide, insecticide and miticide. Active ingredient: Clarified Hydroponic Extract of Neem oil. 0.9%..other ingredients 99.1%.
    As I said..."anyone"???
    Vicki



    Quote Originally Posted by cakedaddy View Post
    The Bayer Rose and Flower products can be used on orchids. You can pick those up at any home improvement box store.
    Posted via Mobile Device
    Last edited by brit6v; September 4th, 2013 at 04:39 PM. Reason: reworded sentence

  2. #12
    Carolla's Avatar
    Carolla is offline Senior Member
    Real Name
    Carol
    My Grow Area
    Under Lights
    Favorite Orchid(s)
    Phals, Catts, Onc. Alliance
    Join Date
    Dec 2012
    Gender
    Female
    Location
    Eastern WA State, USA
    Posts
    1,503

    Default

    Neem oil works fine. One thing I learned (the hard way) is that it is an oil. If you apply it and put the plant in the sun before it is fully dry, it will magnify the sunlight and damage the leaves. Other than that, I've had good luck with it helping the plants with spots. (They don't go away, but the new growth is better.)

  3. #13
    brit6v's Avatar
    brit6v is offline Senior Member
    Real Name
    Vicki
    My Grow Area
    Greenhouse
    Join Date
    Aug 2008
    Location
    Alabama
    Posts
    395
    Member's Country Flag

    Default Carolla

    Thank you!


    Quote Originally Posted by Carolla View Post
    Neem oil works fine. One thing I learned (the hard way) is that it is an oil. If you apply it and put the plant in the sun before it is fully dry, it will magnify the sunlight and damage the leaves. Other than that, I've had good luck with it helping the plants with spots. (They don't go away, but the new growth is better.)

  4. #14
    ksriramkumar is offline Senior Member
    My Grow Area
    Outside 24/7
    Favorite Orchid(s)
    Vanda, Phals & Dendrobium
    Join Date
    Jul 2013
    Gender
    Male
    Location
    Bangalore,India
    Posts
    6,790
    Member's Country Flag

    Default

    Hi,

    Neem oil is good as it affects only the harmful insects and does not impact other beneficial insects ( honeybees, butterfly, lady bugs) . Neem oil does not mix/soluble in water and could be difficult to spray on as is . suggest mix 2-3 ml of neem oil with 2-3 ml of insecticidal soap ( normal dish washer liquid soap would do also) and mix it and add a litre of warm water and spray in the evenings. this is what i do for my normal house plants and orchids

  5. #15
    Carolla's Avatar
    Carolla is offline Senior Member
    Real Name
    Carol
    My Grow Area
    Under Lights
    Favorite Orchid(s)
    Phals, Catts, Onc. Alliance
    Join Date
    Dec 2012
    Gender
    Female
    Location
    Eastern WA State, USA
    Posts
    1,503

    Default

    Ah, the Neem oil I use comes already mixed in a spray bottle - easy! Thanks for the useful information.

  6. #16
    cakedaddy's Avatar
    cakedaddy is offline Senior Member
    Real Name
    jason
    My Grow Area
    Porch/Patio.
    Join Date
    Nov 2008
    Location
    Florida Panhandle
    Posts
    2,021

    Default

    That's really odd that you couldn't find the premixed or regular concentrated Bayer products. I've never tried neem oil. I thought it was specifically for insect control.
    Posted via Mobile Device

  7. #17
    brit6v's Avatar
    brit6v is offline Senior Member
    Real Name
    Vicki
    My Grow Area
    Greenhouse
    Join Date
    Aug 2008
    Location
    Alabama
    Posts
    395
    Member's Country Flag

    Default

    Thanks for your helpful info...it's good to know for future reference.
    Vicki

    ---------- Post Merged at 09:36 PM ----------

    Hi again Jason,
    I plan to keep checking the two stores now and then because they might have simply been out of the premixed Bayer.

    I've never tried neem oil, either...I didn't know what it's purpose is.
    Thanks for your replys,
    Vicki





    Quote Originally Posted by cakedaddy View Post
    That's really odd that you couldn't find the premixed or regular concentrated Bayer products. I've never tried neem oil. I thought it was specifically for insect control.
    Posted via Mobile Device

  8. #18
    orchidsal's Avatar
    orchidsal is offline Senior Member
    Real Name
    AL
    My Grow Area
    Greenhouse
    Favorite Orchid(s)
    Vandaceous Types
    Join Date
    Oct 2010
    Gender
    Male
    Location
    New Mexico
    Posts
    3,776
    Member's Country Flag

    Default

    Some of the Bayer Insecticides are banned in the EU for causing the Bee population collapse. AL

  9. #19
    Carolla's Avatar
    Carolla is offline Senior Member
    Real Name
    Carol
    My Grow Area
    Under Lights
    Favorite Orchid(s)
    Phals, Catts, Onc. Alliance
    Join Date
    Dec 2012
    Gender
    Female
    Location
    Eastern WA State, USA
    Posts
    1,503

    Default

    Perhaps it would help if we knew the active ingredients when we speak of an insecticide or fungicide. Then we can better tell what is safe or if we are speaking of the same product. I'll try to remember to get the bottles of the ones I have and share that information when I get a chance.

  10. #20
    cakedaddy's Avatar
    cakedaddy is offline Senior Member
    Real Name
    jason
    My Grow Area
    Porch/Patio.
    Join Date
    Nov 2008
    Location
    Florida Panhandle
    Posts
    2,021

    Default

    The Bayer Disease control is tebuconazole...fungicide as far as I know. I don't like using insecticides other than the soaps.
    Posted via Mobile Device

Page 2 of 2 FirstFirst 12

Similar Threads

  1. Black spots on Vanda leaves?
    By sand_tiger86 in forum General Orchid Culture
    Replies: 12
    Last Post: June 14th, 2012, 05:48 AM
  2. Help!! Black spots on leaves..
    By newbiee80 in forum New Growers: Ask the Senior Members
    Replies: 7
    Last Post: June 11th, 2012, 12:51 PM
  3. Cattleya help with black spots and black tips on leaves
    By rinapedia in forum Cattleya Information
    Replies: 4
    Last Post: March 6th, 2012, 01:03 AM
  4. black spots on leaves
    By Raver in forum Orchid Ailments / The Compost Pile
    Replies: 7
    Last Post: May 20th, 2010, 09:05 AM
  5. Black spots on Catt leaves
    By poetiscariot in forum Orchid Ailments / The Compost Pile
    Replies: 4
    Last Post: July 2nd, 2009, 09:52 PM

Tags for this Thread

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.