Cooler weather means more foxglove aphids: a refresher

foxglove aphid 3_SJ

Foxglove aphid feeding on pansy. Note the two dark-green spots on the abdomen and the dark leg joints which are characteristic of this pest.

Now that temperatures have cooled down, it’s time to start watching for foxglove aphid as your primary aphid pest, rather than green peach or melon aphid.  Here’s links to 2 articles that were published this week that talk about this pest’s biology and control measures.

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4 Ways You’re Accidentally Killing Your Predatory Mites!

PowerPoint PresentationRecently, 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 being MURDERED (Duh dun DUHNNN!)… By improper storage.

This post focuses on whether YOU might also be guilty of mite murder.

(And yes, I’ve stooped to the level of click-bait titles).

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Posted in biological control, Climate, compatibility with pesticides, Predatory mites, Thrips | Tagged , , , | 4 Comments

MSU Offering Greenhouse and Horticultural Lighting Course

Our extension colleagues at Michigan State University are offering an online course on Greenhouse and Horticultural Lighting.  The course works at your own pace, and can be completed anytime between December 2016 and February 2017.  Lots of information is available, and the course covers topics by Dr. Erik Runkle who gave some excellent talks at this year’s Canadian Greenhouse Conference. Continue reading

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Low Light and High Humidity: Identifying Oedema

Figure one: Typical symptoms of Odema/Intumescence.

Figure 1: Typical symptoms of Odema/Intumescence.

Oedema or edema, also known as intumescence.  This physiological disorder usually appears during periods of low light – from now through the fall, winter and into the spring.  If you’ve noticed salt-like crystals, odd tumour-like growths or water-soaked spots on either side of your plant leaves this disorder could be the culprit (Figure 1). The disorder affects a wide variety of tropical plants and succulents.  It can also affect greenhouse crops such as lilies, cyclamen, sweet potato vine, geranium, begonia, petunia, calibrachoa, ornamental peppers and other Solanaceae family plants. Continue reading

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Webinar Detailing Thrips Control Strategies Now on the Web.

thrips infographic_no titleFor 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. Continue reading

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

Growing Forward 2 Producer Applications due November 3rd!

Did you get some neat ideas from the Canadian Greenhouse Conference or Cultivate this year?  Have you been thinking of an innovative expansion project? Maybe you’re interested in ensuring that your business continues to operate efficiently? Now’s the time to write those ideas down! Continue reading

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Meet the OMAFRA Greenhouse Floriculture Team at CGC!

Chat with the OMAFRA specialists - Chevonne Carlow (left) and Sarah Jandricic (right) - at CGC.

Chat with the OMAFRA greenhouse floriculture specialists – Chevonne Carlow (left) and Sarah Jandricic (right) – at CGC.

Getting excited about the Canadian Greenhouse Conference?  We are too!  This year promises great learning opportunities, lots of fun and an excellent place to network with others in our industry.

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