This is a public-interest archive. Personal data is pseudonymized and retained under GDPR Article 89.

Re: Whitefly?

T.L.Miller wrote:
> 
> from:  Ruth Zavitz at rzavitz@execulink.com
> 
> >The whiteflies are tiny white moths which lay eggs on the undersides of the
> >leaves.  These hatch out into little wormlike nymphs which suck out the
> >plant juices, then pupate and emerge as more whiteflies.
> >
> >WD-40 or any of the other soap or oil sprays are good controls as they tend
> >to smother the eggs as well as the nymphs.  However,you have to keep after
> >them because the adult moths will fly to, and hide in other plants when you
> >start to spray and then return to lay more eggs as soon as you leave.
> 
> Whiteflies.........
> When I had an infestation a couple of years ago on my tropical hibiscus,
> I threw everything I had at them. When my pump sprayer wasn't doing the
> job, I went to an electric fogger. I used soap, dishwashing detergent,
> Diazinon, Orthene, Cygon and sprayed every 3 or 4 days and I killed
> thousands and thousands of whiteflies. (BTW, this is outdoors.)
> 
> The only problem was the infestation expanded to more plants. I posted
> messages in the <rec.gardens> newsgroup and several respondents
> recommended encarsia formosa (sp?), a natural predator, but others said
> this approach was effective only in a controlled environment such as a
> greenhouse. Someone mentioned Sun Oil's Ultra Fine Oil so I got some and
> I think that started to turn the tide in my favor. Below freezing
> temperatures finally finished the battle and I had won.
> 
> I've learned that the products Merit and/or Marathon are what's needed.
> Merit, as a spray, is intended for outdoor use, while Marathon is in
> granule form and is intended for greenhouse use. Find these and you'll
> have a clear and decisive victory.
> 
> Tom Miller
> *****************************************************


Whiteflies are so persistent.  Since we don't often have freezing
weather in San Jose, they live through the winter here.  I tried a
number of sprays including some very toxic ones.  I used them many
times, and may have killed some  of the flies, but more of them quickly
hatched out.  I also got some Dexol Tender Leaf, systemic granules which
are spread around the plant and worked into the soil.  This type of
poison works well on insects on roses, but it didn't get rid of the
white flies on my fuchsias.  The sticky traps didn't work the first time
I used them, but that was because I used only a couple of them, and
didn't place them close to the plant.  This year I bought lots of them
and surrounded the plants with them.  The traps were soon covered with
white flies and other insects, and my fuchsias were left alone. 
Granted, the bright yellow traps are not attractive, but I grew fond of
them when they were covered with the hated whiteflies. 
Hope this helps.
Vera





T.L.Miller wrote:
> 
> from:  Ruth Zavitz at rzavitz@execulink.com
> 
> >The whiteflies are tiny white moths which lay eggs on the undersides of the
> >leaves.  These hatch out into little wormlike nymphs which suck out the
> >plant juices, then pupate and emerge as more whiteflies.
> >
> >WD-40 or any of the other soap or oil sprays are good controls as they tend
> >to smother the eggs as well as the nymphs.  However,you have to keep after
> >them because the adult moths will fly to, and hide in other plants when you
> >start to spray and then return to lay more eggs as soon as you leave.
> 
> Whiteflies.........
> When I had an infestation a couple of years ago on my tropical hibiscus,
> I threw everything I had at them. When my pump sprayer wasn't doing the
> job, I went to an electric fogger. I used soap, dishwashing detergent,
> Diazinon, Orthene, Cygon and sprayed every 3 or 4 days and I killed
> thousands and thousands of whiteflies. (BTW, this is outdoors.)
> 
> The only problem was the infestation expanded to more plants. I posted
> messages in the <rec.gardens> newsgroup and several respondents
> recommended encarsia formosa (sp?), a natural predator, but others said
> this approach was effective only in a controlled environment such as a
> greenhouse. Someone mentioned Sun Oil's Ultra Fine Oil so I got some and
> I think that started to turn the tide in my favor. Below freezing
> temperatures finally finished the battle and I had won.
> 
> I've learned that the products Merit and/or Marathon are what's needed.
> Merit, as a spray, is intended for outdoor use, while Marathon is in
> granule form and is intended for greenhouse use. Find these and you'll
> have a clear and decisive victory.
> 
> Tom Miller
> *****************************************************
> If you like tropical plants like hibiscus, please see:
> <http://www.trop-hibiscus.com>
> --------------------------------------------------------
> If you're interested in some Tropical Hibiscus discussion,
> you may want to join our mail list. E-mail
> <req.hibiscus@packet.net> and in the subject or body of the
> message, put "subscribe hibiscus".
> *****************************************************
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index