Category Archives: Thrips

Managing Million Bells, 2017 Updates

It’s that time of year again, when unrooted cuttings or rooted plug trays of Million Bells (Calibrachoa) are first arriving in the greenhouse.   When they go right, Calibrachoa are a relatively easy, staple spring crop.  However, when million bells go bad, they … Continue reading

Posted in Aphid control, Aphidius wasps, biopesticides, Black root rot, Calibrachoa, Fungicides, fungus gnats, Preventative treatments, Thielaviopsis, Thrips | Tagged , , , | Leave a comment

4 Ways You’re Accidentally Killing Your Predatory Mites!

Recently, I had an interaction with a grower where their long-standing biocontrol program for thrips suddenly seemed to be failing. After a (too long) investigation by Graeme Murphy and myself, we came to a horrible realization: their predatory mite were … Continue reading

Posted in biological control, Climate, compatibility with pesticides, Predatory mites, Thrips | Tagged , , , | 9 Comments

Webinar Detailing Thrips Control Strategies Now on the Web.

For those of you that missed my webinar on “Thrips Control: from Propagation to Pocketbook”, it is now available for free on the Greenhouse Canada Magazine website.  Keep reading for more details and a link to the talk.

Posted in biological control, biopesticides, BontaniGard, chrysanthemums, costs, biological control, dipping cuttings, IPM tools, Met52 insecticide, On Farm Research, Pest control strategies, sticky tape, Thrips | Tagged , , , , , , | Leave a comment

“Sticking” it to high populations of thrips in greenhouse crops.

You’ve likely noticed by now that thrips populations are especially high because of the hot, dry summer. Many growers are noticing their usual biocontrol programs can’t keep up, and further defenses are needed this year. The use of mass trapping strategies may be the … Continue reading

Posted in chrysanthemums, IPM tools, Mass trapping, On Farm Research, Pest control strategies, sticky tape, Thrips | Tagged , , , , , , , , , , , | Leave a comment

Where do thrips come from? YOUR MUM(s).

Hopefully my bad attempt at a “Your Momma” joke will get your attention, because this is an important post. Ongoing research by Rose Buitenhuis’ Lab at Vineland has shown that an incredible number of thrips and spider mites come in … Continue reading

Posted in biological control, chrysanthemums, Pesticide resistance, pesticides, Spider mites, Thrips | Tagged , , , , , , , | 1 Comment

Ramping up thrips biocontrol BEFORE they get out of control!

Now that the warm weather is finally upon us, it’s time to start worrying about thrips control. What we’ve learned over the years is that pesticides just don’t cut it – the only reliable chemical for western flower thrips in Ontario is … Continue reading

Posted in biological control, biopesticides, chrysanthemums, Microbial products, Natural enemy interactions, Nematodes, Predatory mites, Preventative treatments, Thrips | Tagged , , , , , , , , , , , | 1 Comment

Can you safely mix nematodes and pesticides?

Entomopathogenic nematodes – used to control fungus gnats, shoreflies and thrips – are often a “gateway bio” into biocontrol use in greenhouses.  This is because not only are they effective and easy to use, but they’re generally compatible with insecticide … Continue reading

Posted in biological control, biopesticides, fungus gnats, IPM tools, Met52 insecticide, Natural enemy interactions, Nematodes, pesticides, Thrips | Tagged , , , , , , , | 1 Comment