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 1 of 3 123 LastLast
Results 1 to 10 of 23
Like Tree4Likes

syrop-ish dots on pahl leaves

This is a discussion on syrop-ish dots on pahl leaves within the Genus Specific forums, part of the Orchid Culture category; Hello all, Today i discovered syrop-like drops on few leaves on one of my mini ...

Click here to increase the font size Click here to reduce the font size
  1. #1
    chemist's Avatar
    chemist is online now Senior Member
    Real Name
    Svetlana
    My Grow Area
    Windowsill
    Favorite Orchid(s)
    Phals, catts, catasetums
    Join Date
    Jul 2014
    Gender
    Female
    Location
    Long Island, NY
    Posts
    463
    Member's Country Flag

    Default syrop-ish dots on pahl leaves

    Hello all,
    Today i discovered syrop-like drops on few leaves on one of my mini phal (only on one phal in group of 6 in one tray). I was ready to blame my son for mixing his drink into spray bottle for misting but then I found here in one postthat its possible to see it on orchids. But why?! What causes it?! Did anybody experience it?
    Posted via Mobile Device
    Posted via Mobile Device

  2. #2
    PaphMadMan is offline Senior Member
    Real Name
    Kirk
    My Grow Area
    Under Lights
    Favorite Orchid(s)
    Paphiopedilum
    Join Date
    Sep 2010
    Location
    Madison, Wisconsin
    Posts
    1,477
    Member's Country Flag

    Default

    Sometimes orchids in active growth will develop drops of sap at nodes on spikes or stems, sometimes on the edges of new leaves or bracts, sometimes on or near flowers. They can be watery or syrupy, and sometimes enough to drip onto surfaces below. Some people call them happy sap as they usually indicate a healthy plant in active growth with an adequate water supply.

    But you should also check for insects. Sometimes aphids or other sucking insects excrete similar sticky drops. Hope yours are happy sap and not an insect problem.


    (also a chemist)

  3. #3
    chemist's Avatar
    chemist is online now Senior Member
    Real Name
    Svetlana
    My Grow Area
    Windowsill
    Favorite Orchid(s)
    Phals, catts, catasetums
    Join Date
    Jul 2014
    Gender
    Female
    Location
    Long Island, NY
    Posts
    463
    Member's Country Flag

    Default

    Thank you Kirk for your reply!
    Unfortunately in my case its not happy orchid produces sap . Shortly after i posted question i found this
    Name:  eaten leaf1.jpg
Views: 141
Size:  158.9 KB
    No sign of any insects though. I read you can use rubbing alcohol to get rid of aphids so yesterday i treated this phal and all others with 70 % isopropanol.
    Whatever it is its still produces sticky droplets, much less than when i found it.
    I'm thinking to try physan maybe?!

    As a chemist what do you think alcohol do to get rid of aphids? I read to get rid of aphids you need to low temperature, so does alcohol works only to lower temperature when it evaporates? Is it possible to use ethanol or methanol? Methanol will lower temperature even lower than isopropanol.
    I do understand why isopropanol is used, just curious if any other alcohol will have same or better result.


    How do you grow orchids in WI as its cold there and i guess most of the year you have low RH? Reason I'm asking i was offered job in WI, and one of thoughts was how I am going to grow orchids there

    P.S.: i hope this post will get posted because one from yesterday did not go through

  4. #4
    78Terp's Avatar
    78Terp is offline An Avant Gardner
    Real Name
    Harvey
    My Grow Area
    Under Lights
    Favorite Orchid(s)
    1-Neo falcata,2-Phal,3-Paph
    Join Date
    Nov 2013
    Gender
    Male
    Location
    Littleton, Colorado
    Posts
    6,036
    Member's Country Flag

    Default

    Last time (only time I experienced anything like this) it turned out to be crown rot. I had the sappy pus under the phal leaves like you describe.

  5. #5
    chemist's Avatar
    chemist is online now Senior Member
    Real Name
    Svetlana
    My Grow Area
    Windowsill
    Favorite Orchid(s)
    Phals, catts, catasetums
    Join Date
    Jul 2014
    Gender
    Female
    Location
    Long Island, NY
    Posts
    463
    Member's Country Flag

    Default

    Harvey, is not crown root starts from where leave starts to grow? On mine I don't see anything wrong there.
    Name:  1.jpg
Views: 136
Size:  151.1 KB Name:  2.jpg
Views: 136
Size:  167.6 KB
    Leaves started to wilt little bit but I thought it due to root rot and plant was repotted just recently. Actually before repotting I would not even think it has root rot, leaves look healthy and it grew new leaf. About a month ago I moved this one to the east window where it got direct light in the morning - so i thought little bit purplish leaves is due to more light.
    Name:  3-1.jpg
Views: 132
Size:  156.7 KB Name:  5.jpg
Views: 131
Size:  159.5 KB

    Where red arrows point there are little dots of syrup like liquid, exactly where it has eaten pattern.

    But I also noticed that after yesterdays application of rubbing alcohol that some of eaten area disappeared. Ill post pictures in next post

    ---------- Post Merged at 08:26 PM ----------

    before treatment with alcohol
    Attachment 73002

    and next day after
    Attachment 73003

    interesting...
    any thoughts on this one?!

  6. #6
    78Terp's Avatar
    78Terp is offline An Avant Gardner
    Real Name
    Harvey
    My Grow Area
    Under Lights
    Favorite Orchid(s)
    1-Neo falcata,2-Phal,3-Paph
    Join Date
    Nov 2013
    Gender
    Male
    Location
    Littleton, Colorado
    Posts
    6,036
    Member's Country Flag

    Default

    Crown rot and root rot are separate issues. I was surprised when mine was rotted at the 3rd from the top leaf. I had suspected insect but only that one was affected. I just threw my experience out for consideration.

  7. #7
    chemist's Avatar
    chemist is online now Senior Member
    Real Name
    Svetlana
    My Grow Area
    Windowsill
    Favorite Orchid(s)
    Phals, catts, catasetums
    Join Date
    Jul 2014
    Gender
    Female
    Location
    Long Island, NY
    Posts
    463
    Member's Country Flag

    Default

    Do you have pictures of your orchid with crown rot by any chance? There are many on web but sometime they mixed up with all kind of rot.
    I'm assuming crown rot starts from where leaves attached and what i see on mine is something in the middle of the leave.

    How did you treat your orchid? Where you able to save it?

  8. #8
    78Terp's Avatar
    78Terp is offline An Avant Gardner
    Real Name
    Harvey
    My Grow Area
    Under Lights
    Favorite Orchid(s)
    1-Neo falcata,2-Phal,3-Paph
    Join Date
    Nov 2013
    Gender
    Male
    Location
    Littleton, Colorado
    Posts
    6,036
    Member's Country Flag

    Default

    Nope, I did not save it. By the time it 'matured' and I figured out what it was, it was too late for the orchid. Mine seemed to happen in the middle and edges of the leave too. At first I thought bugs, but never found evidence or spread to others. Then I thought, too much light. So I moved it farther from the artificial lights it was under. I used alcohol on the bottom of my phal leaves too. But finally, it just more or less separated from itself, top part in one hand, the rest in the other hand. And no, no pictures.

    But I am not saying this is what you have going on.

  9. #9
    PaphMadMan is offline Senior Member
    Real Name
    Kirk
    My Grow Area
    Under Lights
    Favorite Orchid(s)
    Paphiopedilum
    Join Date
    Sep 2010
    Location
    Madison, Wisconsin
    Posts
    1,477
    Member's Country Flag

    Default

    Quote Originally Posted by chemist View Post
    Thank you Kirk for your reply!
    Unfortunately in my case its not happy orchid produces sap . Shortly after i posted question i found this ...

    No sign of any insects though. I read you can use rubbing alcohol to get rid of aphids so yesterday i treated this phal and all others with 70 % isopropanol.
    Whatever it is its still produces sticky droplets, much less than when i found it.
    I'm thinking to try physan maybe?!

    As a chemist what do you think alcohol do to get rid of aphids? I read to get rid of aphids you need to low temperature, so does alcohol works only to lower temperature when it evaporates? Is it possible to use ethanol or methanol? Methanol will lower temperature even lower than isopropanol.
    I do understand why isopropanol is used, just curious if any other alcohol will have same or better result.

    How do you grow orchids in WI as its cold there and i guess most of the year you have low RH? Reason I'm asking i was offered job in WI, and one of thoughts was how I am going to grow orchids there

    P.S.: i hope this post will get posted because one from yesterday did not go through
    If there is physical damage to the leaf I would not use any alcohol unless you do see aphids or other insects to be removed. Alcohol (or Physan) is pretty much harmless to the outer surface of a leaf, tough cells, waxy layer, but at a cut or other physical damage they can penetrate several layers deep into healthy tissue just expanding the area of damage and slowing down the healing. Those inner cells only have thin cells walls, really no protection from the chemical burn caused by alcohols.

    I think alcohol is effective against aphids, mealy bugs and similar soft bodied insects for much the same reason. They don't have thick tough outer layers. How does alcohol feel if you get it into a cut? It disrupts cell membranes, draws water to itself causing cells to dehydrate, etc. I don't think the use of alcohol has anything to do with temperature. The effect is far too small.

    Summers in Wisconsin can be very warm, and often very humid, but winter can be very cold and indoor air is very dry then. I've never grown orchids anywhere else. You find ways to manage. Now I have mostly miniatures and a few Paphs, all in terrarium environments in winter but that is as much for low maintenance as for humidity. I have often used translucent plastic tubs as partial enclosures, tops open in summer, partly covered in winter, for any plants that were small enough. At times I used larger foliage plants to surround the orchids to give them a slightly more humid environment. I've also had pretty good success, at least with Catts and some Paphs just growing indoors with no particular effort to give the plants higher humidity.

  10. #10
    Catt Mandu's Avatar
    Catt Mandu is offline Senior Member
    My Grow Area
    Porch/Patio.
    Favorite Orchid(s)
    Cattleyas, Phalaenopsis
    Join Date
    Jun 2012
    Gender
    Male
    Posts
    208

    Default

    Be very watchful for any of these areas turning watery, soft, developing a bad odor, or spreading rapidly. If this happens, cut the leaf off, using a sharp, sterilized blade, cut made through healthy tissue well outside of the damaged area. I suspect this might be a bacterial rot of some kind.

Page 1 of 3 123 LastLast

Similar Threads

  1. Help with this on the leaves
    By rosie in forum Orchid Ailments / The Compost Pile
    Replies: 14
    Last Post: May 21st, 2013, 03:37 AM
  2. Tiny dots of sticky stuff, what is it?
    By Dawn-oh in forum Orchid Ailments / The Compost Pile
    Replies: 2
    Last Post: January 18th, 2012, 08:43 PM
  3. Phrag brown dots, what is it
    By Phyrex in forum New Growers: Ask the Senior Members
    Replies: 8
    Last Post: September 7th, 2008, 02:11 AM
  4. Aerides quinquevulnera with tiny dots
    By ntgerald in forum Orchids of Other Genera IN BLOOM
    Replies: 5
    Last Post: July 29th, 2007, 08:24 AM
  5. Phalaenopsis hieroglyphica, purple dots and hairy lips
    By ntgerald in forum Phalaenopsis, Oncidium, & Intergenerics IN BLOOM
    Replies: 18
    Last Post: May 16th, 2007, 01:57 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.