Author Archives: Sarah Jandricic, Greenhouse Floriculture IPM Specialist, OMAFRA

4 Ways You May Be Killing Your Predatory Mites, and How to Check!

Note: This is a re-post because it now comes with an awesome new video of how to monitor you mite sachets! Recently, I had an interaction with a grower where their long-standing biocontrol program for thrips suddenly seemed to be … Continue reading

Posted in biological control, Climate, compatibility with pesticides, Predatory mites, Thrips | Tagged , , , | Leave a comment

Fainting “Freedom Red”? Wilting “Whitestar”? Potential causes of Poinsettia collapse, solutions, and the importance of testing.

From now until mid-November is when you’ll most likely see plant losses in poinsettia due to severe wilting. These losses can be considerable: anywhere from 2-15% in Niagara operations in past years.  Pythium may be considered the most “likely” culprit in … Continue reading

Posted in biopesticides, diseases, Fungal diseases, Fungicides, Poinsettia, Pythium, Thielaviopsis | Tagged , , , , , | 1 Comment

Attention IPM Scouts: a brief guide to hand lenses.

Ever wonder if you’re using the best hand lens for the job to investigate pests in your greenhouse?  Curious about the pros/cons of different styles?  Then read the following post from our friends at Penn State: http://sites.psu.edu/frost/2017/09/05/a-brief-guide-to-hand-lenses/

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Be part of a conversation that matters: farmer mental health.

Until recently, there wasn’t data about the mental health of Canadian farmers.  Dr. Andria Jones-Bitton and PhD Candidate Briana Hagen of the Ontario Veterinary College are changing that.  Please consider making time to participate in this worthwhile project. Read on … Continue reading

Posted in Government Programs, Industry trends, Resources | Tagged , , | Leave a comment

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 … Continue reading

Posted in Bemisia whitefly, Lewis mite, Pest control strategies, Poinsettia, Preventative treatments | Tagged , , , , | 1 Comment

Update on foxglove aphid control: seeking greenhouse collaborators!

Investigating biocontrol options for our industry is always important, given the lack of registered insecticides in this country.   Currently, we are relying heavily on two closely related chemicals –  Beleaf (flonicamid) and Endeavor (pymetrozine) – for control of the … Continue reading

Posted in Aphid control, Aphids, biological control, Foxglove aphid | Tagged , , , , | Leave a comment

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

Poinsettias cuttings are here!   They may only in the greenhouse for a relatively short time, but they can have BIG problems compared to other crops.  Not the least of which is 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 […]

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Posted in Bemisia whitefly, biological control, dipping cuttings, imported cuttings, Pest control strategies, Poinsettia, Preventative treatments, Registered pesticides, Whitefly | Tagged , , , , , , , , | 3 Comments