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HELP !! How do I get rid of white fly ?

This is a discussion on HELP !! How do I get rid of white fly ? within the General Orchid Culture forums, part of the Orchid Culture category; I did some insecticidal soap spraying and got quite a few that way.....also bought a ...

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  1. #11
    Gilda is offline "Master of the Moth and Phrags "
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    Default update on white fly

    I did some insecticidal soap spraying and got quite a few that way.....also bought a no- pest -strip and hung it up,closed the growroom up for 48 hours....so far so good ,but I am on the lookout for newbies...keeping fingers crossed !

  2. #12
    LaurieD is offline Mealy assassin
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    I'm with the "It's time for the big guns" school on this one! Whiteflies are a nasty, nasty pest. They are one of the big reasons that I don't put a lot of orchids out in the summer. Insecticidal soap is pretty much a waste of time unless you sit there and blast every one you see. Which is impossible because the little b@$t@$s fly away when you start spraying.

    My window boxes get hit hard every year. I love bacopa and so do whiteflies. I finally gave in and now they get the orthene treatment. All the orchids that spend the summer months outdoors also get orthene before they come in for winter.

    Whiteflies must die..........

  3. #13
    Gilda is offline "Master of the Moth and Phrags "
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    I agree, but the big guns are going to have to wait till they go outside....the majority of my orchids summer outside ,and I have never had a problem with white fly, but they do get orthened while being outside ! My growroom is adjacent to our living quarters(sunroom), and I don't want the nasty smell or the chemical being that close to where I do a lot of breathing !

  4. #14
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    mde
    mde is offline Senior Member
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    I've never had a whitefly problem, but I did have a little trouble with aphids last fall after some plants came in from the patio. And I had some trouble a few years back with scales on my other plants.

    For the aphids, I used manual control as much as possible, carefully tending to them by hand on each flower. Sounds like this wouldn't be an option with the whitefly. I also used water spray, often. Then I used a pyrethrin (organic botanical, by SAFER). This really worked well, but didn't totally solve the problem. Then I diluted Di-Syston, a systemic, into the water I used, and finally got it under control. (I think, knock on wood.)

    I believe the Di-Syston might do the job. The one I use, which I've successfully used on all my houseplants for scales, is made by Bonide. It comes in granules. For soil, you mix it in, then water. When I used it on the orchids, I diluted it, not knowing how it would affect the plant, especially the blooms. Since the granules tend to fall through orchid potting mix, I put it right in the water and stirred, to release the active component. It doesn't list orchids on the container, but does list a number of flowering outdoor and tropical plants that it is safe for, and I didn't have a problem. I used it on an Encyclia, a Gongora, and an Oncidium, all while in bloom, and it didn't seem to affect the blooming at all. But because I was so attentive with all the other manual and non-chemical treatments simultaneously, I honestly can't say how much it played a role. Because I diluted it, I did it for several waterings in succession. I was just playing it cautious, since I didn't have any experience with it.

    Can someone tell me how the Malathion is applied - two of you mentioned this. Is this the same as the X-clude? Can it be used on blooms if sprayed at the proper distance?
    And the same for the Sevin. The only bug - orchid problem I've had, as mentioned, is the aphid, and they didn't touch any part of the plant except the blooms. I'd love to have some advice on options that will not blast the buds and flowers, in case the aphids make a reappearance. This is why I tried the Di-Syston systemic insecticide. But amounts for this really was a guessing game, and as mentioned, I still don't know if I had enough for it to work, or if it was my daily aphid killing missions that solved the problem?

    Thanks for anyone with answers to my last two sections....

    Matt

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