The “Tipping Point” for Whitefly Control in Poinsettia

Picture1If you started out  using biological control in your Poinsettia crop this year, you’ve now reached the crucial tipping point for whitefly control decisions.

Based on the size of your whitefly population in mid-late September, your populations could end up too high by November  to effectively control.  Ultimately, this could affect sales.

So, do you keep going, and hope for the best?  Or switch horses mid-stream, and start using chemicals?  To help you determine which is the right call, keep reading.

Continue reading “The “Tipping Point” for Whitefly Control in Poinsettia”

Thinking ahead: What you can do THIS WEEK to prevent Lewis mite damage in your poinsettias.

2016 turned out to be a bad year for Lewis mite (Eotetranychus lewisi) in poinsettia.  Although it’s too early to say how 2017 is going to go, you should be considering possible preventative measures THIS WEEK for Lewis mite, especially if you have a history of Lewis mite with your cuttings. Treatment of this pest is more difficult later in the crop (though not impossible).  Keep reading for biological and chemical control options for this pest.

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Lewis mite, a species of spider mite, can cause major crop losses if left uncontrolled.

Continue reading “Thinking ahead: What you can do THIS WEEK to prevent Lewis mite damage in your poinsettias.”

Christmas in July: tips for controlling whitefly in poinsettia. (Hint – start now!).

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Juvenile and adult Bemisia whitefly (Bemisia tabaci).  There are 2 biotypes of this pest (“B” and “Q”) which look identical; however, their response to chemicals is very different.

Poinsettias cuttings are here! Unfortunately, they will likely arrive with unwanted “presents” in tow.  This includes Bemisia whitefly, a pest that can be hard to control with natural enemies and can ALSO be resistant to pesticides.  So what’s a grower to do?  

By implementing some preventative measures RIGHT NOW, and understanding WHEN it’s appropriate to spray, you can help save yourself a lot of headaches later.

Continue reading “Christmas in July: tips for controlling whitefly in poinsettia. (Hint – start now!).”