Re: white fly
- Subject: Re: white fly
- From: &* <t*@mac.com>
- Date: Wed, 12 Jun 2013 08:52:30 -0400
On 6/12/13, at 1:30 AM, Karrie Reid skreid@ucanr.edu said:
>I am attaching the pest management guidelines from the UC Integrated
>Pest Management program, and below is the link to the website page for
>management of all whiteflies.
My experience w/ whiteflies, the small ones that form a cloud when an infested bush is disturbed, goes back about 20 years. One day I discovered that several of my tropical hibiscus were ailing, and I discovered whiteflies. Days later I noticed that they were spreading to nearby hibiscus and seemed to threaten all of my 60+ hibiscus lined up around the yard. I made various attempts to stop their progress -- dishwashing detergent, soap, Diazinon, Dursban, Orthene and others, but their progress continued. I'm sure I killed 100s of thousands of whiteflies, but they kept spreading. Eventually, I bought a fogger, and that seemed to slow them down when I used Ultra-Fine oil every few days. Finally, I think it was a freeze that got rid of them.
Years later, I guessed that a Christmas poinsettia that was put outside after the holidays may have been the source. A commercial grower years later pointed out that poinsettia growers had started using products containing imidacloprid to solve their whitefly problems. Fortunately, I haven't seen any more WFs in years.
Tom Miller
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If you like tropical plants like hibiscus, please see:
<http://trop-hibiscus.com>
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"Victory has a hundred fathers but defeat is an
orphan." Galeazzo Ciano
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