NEW Resource on Air-Assisted Spraying Now Available!

Dr. Jason Deveau (@spray_guy), Application Technology Specialist, OMAFRA

We’re pleased to announce that “Airblast101 – Your Guide to Effective and Efficient Spraying, 2nd edition” is now freely available as an ePub, or at cost via print-on-demand publishing, via . The new addition has all new content, 33% longer, and more than 200 colour illustrations and figures.

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Upcoming COHA Webinar for Growers – “Surface Water Quality”

Surface Water Quality Management in Ornamental Horticulture

By:  Dr. Jeanine West, Phytoserv

January 26, 2021

10:00 a.m. (PST) / 1:00 p.m. (EST)


Dealing appropriately with water issues is arguably one of the most important concerns facing today’s horticultural sector. There are numerous regulations at municipal, provincial and federal levels that govern access to water as well as the implications associated with run-off water. Growers have responded by constructing elaborate pond and water recycling systems but are now challenged to maintain the quality of water in their pond systems required to keep their modern irrigation systems operable. In this webinar Dr. Jeanine West will share water quality management strategies based on her expertise and preliminary research findings. Time will be allocated for Q&A.

Click here to register

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Questions About Pesticide Resistance?

OMAFRA Lunch and Learn Series has Answers.


Spider mite - Wikipedia

Pesticide resistance is something most growers have run into at some time or another. High pesticide resistance in species like western flower thrips and Bemisia whitefly is something we’ve learned to work around. But how can we avoid resistance in pest species where we still rely on pesticides? For pests like spider mites and powdery mildew, this is an ongoing battle.

Three OMAFRA specialists are hosting a series on pesticide resistance that will include question and answer periods after each session. Contributors are Hannah Fraser (Entomologist), Dr. Katie Goldenhar (Plant Pathologist) and Kristen Obeid (Weed Management). Read on for dates and how to register.

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Egg Mass on your Christmas Tree? Here’s What You Need to Know

Seeing brown, fuzzy egg masses on your Christmas tree?
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Agri-Food Workplace Protection Program: Additional Funding

Enhaced Worker Protection Program

On May 14, 2020 the ministry announced the launch of the Agri-Food Workplace Protection Program for Producers.   The government has recently announced an additional $11.6 M in funding.

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Oh NO! Did you MISS the Surviving Covid-19 Town Hall for Growers and Garden Centres on Tuesday?

Opportunity Missed and Taken Green Road Sign and Clouds
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Wholesale Nursery and Garden Centres? Your Covid-19 Town Hall is Tuesday, Nov 24 at 5 pm!

Surviving COVID-19: Town Hall for Growers and Retail
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Temporary Mild Weather Spell Supports Fall Dormant Oil App’s


Now that trees have dropped their leaves and the weather has turned mild for a bit, hort professionals have a short bonus shot at managing overwintering plant pests! The full, dormant rate of horticultural oil is excellent for smothering juvenile stages of insects this time of year as long as the application isn’t followed too closely by a significant freeze event.  Magnolia scale (photo above, overwintering nymphs in autumn) populations were Continue reading

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Have You Seen This Red and Black Bug?

Red bug with black markings

Adult European firebug (Photo: J. Llewellyn)

It looks like a boxelder bug doesn’t it?  Ah, but boxelder bugs have a lot more solid black on their wings.  Maybe a milkweed bug? No, they have red and black wings but no black circles like this one. Can’t find it in any of your reference books?  Wait a minute….maybe its not from North America.

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IPM in The Middle of August

  We recently cracked a case of stunted, distorted leaves and premature leaf drop on honeylocust this week….

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