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  • 1 Post By navyderek

Cottony White Webs in leaf axels

This is a discussion on Cottony White Webs in leaf axels within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; and bud spikes/axels. Whatever is in there is crawling all over the plant aparantly at ...

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  1. #1
    Tmai's Avatar
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    Default Cottony White Webs in leaf axels

    and bud spikes/axels. Whatever is in there is crawling all over the plant aparantly at night and eating the buds as well as munching on the leaf edges near it's web. So far I've found them on catts, epidendrum, vanda, and dend. What in the world is it and what do I do? I've been spraying with malathion when I find these little nasty webs and just treated the whole collection leaf by leaf with Neem today. Anyone else seen this?

    Thanks for your help,
    Tami

  2. #2
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    Cjcorner is offline Senior Member
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    Sounds like spider mites. I use soapy water with alcohol, and water with a systemic. They nest in potting media and usually arrive with new plants.

  3. #3
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    what systemic are good indoors?
    I looked at Bayer for roses but said only outdoors and using it indoors sounded quite scary

  4. #4
    Tmai's Avatar
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    Connie, I don't think it's mites. It targets new buds and can consume one overnight, as well as chew up leaves. I think it is a worm or caterpiller of some kind.
    Stefpix, I use Bayer systemic on my orchids, but only in the summer when they are outdoors. It works great on most pests. Pour it only on the roots and potting medium and do not get it on the leaves as it will burn them. Please note: I have a few orchids in the house and I use it on them too, but I leave them outdoors or in the garage until the potting medium has dried a bit.
    Anybody else have the web problem? They are very thick and white and almost comptetely cover the 'nest'.

    Thanks for your help,
    Tami

  5. #5
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    @ Tami-- Stinks to be having that problem, but I first thought of mites as well. Why don't you take a couple of pictures of the worst affected plants and post them here. We might better be able to help you figure out what is going on.

    If you can't, just go with a generic treatment regimen. I grow indoors so I've included what I do in most cases: Soak the whole plant, pot, medium and leaves in a super-cleaner like Physan20 or Consan20 for 20ish minutes. Be sure to mix that according to label directions for plants, not for hospital cleaning :-). In my experience, that chemical is unforgiving towards anything that affects your plants. Then spray mix and leaves of all affected plants with natural insecticidal soap once to twice a week for at least a month- coat liberally with the insecticidal soap after watering, I spray them towards the end of the day to avoid great amounts of sunburn. Both the Physan/Consan and a good insecticidal soap can be picked up from most dedicated nurseries/garden stores.

  6. #6
    Tmai's Avatar
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    Thanks, Derek, I'll do that if they come back - I've just sprayed and cleaned the whole collection. Nasty buggers - ate 4 buds off my Momilani Rainbow!

  7. #7
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    Good....I'm sure you know this....but be sure to retreat/respray with what you used once a week for a month or so to significantly decrease the chances of reinfestation. :-)

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