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Thread: Pesten 2013 - what are these?

  1. #17
    kulamauiman's Avatar
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    Quote Originally Posted by Not a Number View Post
    Could be the dreaded hibiscus snow scale Pinnaspis strachani

    It is not uncommon to get these on plants from Hawaii. These are an armored scale and are difficult to eradicate.

    Look for the three "ridges" on the males.

    http://www.cdfa.ca.gov/plant/PPD/PDF..._strachani.pdf
    http://lee.ifas.ufl.edu/Hort/Videos_...s_Problems.pdf
    Concur. Cycad scale is host specific to cycads. Hibiscus snow scales are not. Have commonly seen them infesting nepenthes even at large commercial nurseries.

  2. #18
    Whimgrinder's Avatar
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    Hibiscus scale. Get out the Acephate (or Imiclipromid, or Talstar One). Otherwise, you will be wiping these off with alcohol for the rest of your days.

  3. #19
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    If I only need it overnight could I take the affected plant out and bag it in a large bag with the Hot Shot deal and put it on my patio or will that not work if it is Hibiscus scale?

  4. #20
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    Take a systemic to those ********!

  5. #21
    Whimgrinder's Avatar
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    And it almost goes without saying; if this has been an ongoing problem for a while, you can be pretty certain that is not the only plant that has scale on it now. (Unless it is isolated)

  6. #22

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    It looks like the wretched snow scale I had. I used systemics but I don't know if the scale actually died -- it's hard to tell dead scale from living scale. The stress triggered the plant to produce a basal so I immediately cut the main plant off and started clean. Luckily I haven't seen them since.

  7. #23
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    Quote Originally Posted by Whimgrinder View Post
    And it almost goes without saying; if this has been an ongoing problem for a while, you can be pretty certain that is not the only plant that has scale on it now. (Unless it is isolated)
    100% agree. Hibiscus/snow scale came in on a truncata and I didn't act fast enough. Now its practically impossible to eradicate. If I were you I would act fast so you won't have to deal with a larger infestation further down the road. On a side note, periodic spraying with neem keeps their numbers low enough enough that they don't seem bother the plants. Pretty soon I'm going to have to switch to a systematic and eradicate them for good.
    -Arthur

    Growlist

  8. #24
    swords's Avatar
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    What systemic is good for killing these guys and still safe for Nepenthes? What brand & product name?

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