I read your article on whiteflies, which is one of the best I have found.
We have a greenhouse that was horribly infected with whiteflies last season. As we are about to start it up again, I wondered if we should treat the greenhouse now (will that help with any that may be dormant but will reemerge).
If we should treat now, what should we buy?
Also, I think we will use the Orthene fogger in season but wonder if it is not advised on tomatoes or anything we may eat.
Thank you for your help!
Preventive spraying for whiteflies is smart if you’ve had a problem in specific locations like a greenhouse. If the plants are non edibles, using the ORTHENE FOGGER would be easy, fast and effective. As the temps begin to rise with spring, whiteflies will start hatching and if you have a solid treatment in place there will be little to no chance they can sustain themselves.
Once you move your plants back outside, it would be smart to treat at least 1-2 during the growing season to make sure they don’t pick up a new infestation. I always recommend one of the organic sprays when doing preventive applications. Either the 3 IN 1 or the MULTI INSECT KILLER work well on common garden pests and both are organic. This means they don’t “linger” on the plant long and are gone within a day or two.
If a reinfestation does appear, treat again with either of these organic options and chances are high you can knock it out if you get them soon enough. If not, go to one of the stronger options we have listed in our WHITEFLY CONTROL article and I’m sure you’ll get rid of them for good.