User Tag List

Informational! Informational!:  0
Likes Likes:  0
Page 1 of 2 12 LastLast
Results 1 to 8 of 10

Thread: What is this white stuff on the leaf?

  1. #1
    ps3isawesome's Avatar
    Join Date
    Jul 2014
    Location
    Bay Area, CA, USDA 9B
    Posts
    688
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    What is this white stuff on the leaf?

    I noticed some white stuff that i can scrape off today on my Nepenthes.

    Is this powder mildew?

    THANKS!!



  2. #2
    SerMuncherIV's Avatar
    Join Date
    Dec 2014
    Location
    New Jersey, US
    Posts
    491
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Not powdery mildew. I've noticed it on some of my Nep leaves, but a quick rub with a wet paper towel gets rid of it pretty easily. I'm not sure what it is, but I think it might be mineral residue from the water I use. It doesn't really seem to harm the plants though.

  3. #3
    Sashoke's Avatar
    Join Date
    Sep 2014
    Location
    Tennessee, zone 6B.
    Posts
    826
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Im fairly certain this is just dried flakes of sphagnum moss.
    ~Burgeoning connoisseur of all things ventricosa or otherwise tubby.~

  4. #4
    SerMuncherIV's Avatar
    Join Date
    Dec 2014
    Location
    New Jersey, US
    Posts
    491
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Sashoke View Post
    Im fairly certain this is just dried flakes of sphagnum moss.
    Definitely in the first photo, but look hard at the second and you'll see what he's talking about. It's a pale white sheen that looks almost like mosaic.

  5. #5
    clippity-clip-clip Clue's Avatar
    Join Date
    Oct 2008
    Location
    SF Bay Area & Davis
    Posts
    1,988
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    These aren't mineral deposits (which are more irregularly shaped and easily disappear with surface water on the leaf), but rather epicuticular wax, like the bloom on the outside of grapes.
    "I, for one, can't wait to grow Nepenthes extincta!"
    Plant List ; blog

  6. #6
    SerMuncherIV's Avatar
    Join Date
    Dec 2014
    Location
    New Jersey, US
    Posts
    491
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Ah, that's good to know. It's strange seeing it on that N. veitchii, I've only ever seen it on Nepenthes that have smooth/glossy leaves. Perhaps it's induced by environmental conditions?

  7. #7
    clippity-clip-clip Clue's Avatar
    Join Date
    Oct 2008
    Location
    SF Bay Area & Davis
    Posts
    1,988
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by SerMuncherIV View Post
    Ah, that's good to know. It's strange seeing it on that N. veitchii, I've only ever seen it on Nepenthes that have smooth/glossy leaves. Perhaps it's induced by environmental conditions?
    Personally, I've noticed that it's a lot more prominent on stressed plants, especially in low humidity, or plants that have poor roots, which interfere with water uptake. The thicker cuticle and extra wax might be a plant's defense to water loss due to transpiration.
    Last edited by Clue; 09-14-2015 at 03:38 PM.
    "I, for one, can't wait to grow Nepenthes extincta!"
    Plant List ; blog

  8. #8
    SerMuncherIV's Avatar
    Join Date
    Dec 2014
    Location
    New Jersey, US
    Posts
    491
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Makes sense now, I've observed it on some of the plants that I recently moved from my terrarium to the windowsill.

Page 1 of 2 12 LastLast

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
  •