2019 Poinsettia Open House: Jordan, ON

poinsettia trials _pinks 2Once again, Focus Greenhouse Management and Jeffery’s Greenhouse are partnering to bring us the 2019 Poinsettia Open House!

There will be presentations on pest management in poinsettia, troubleshooting production issues as well as plant growth regular trials.  And, as always, there will be lots and lots of poinsettia varieties to look at!

Read on for more details including speakers and sales reps that will be present.

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Biocontrol of Bemisia: 7 Things to Consider Before You Turn to Chemicals.

turning color.jpgIt’s that time of year again where it’s “do or die” time in Poinsettia: either your biocontrol program is on track, or it’s time to see if pesticides work.

Here’s what to look for in your crop to help you make the decision, including acceptable infestation levels and evidence of successful biocontrol.

This post also contains information on chemical options for Bemisia whitefly in 2019.

Continue reading “Biocontrol of Bemisia: 7 Things to Consider Before You Turn to Chemicals.”

What you NEED TO KNOW about Thrips and Whitefly Control: September Update

thrips and whiteflyIt’s that time of year again where two of our biggest crops cross over: fall pot mums and poinsettia. This means growers have to simultaneously keep an eye on the two biggest pests in the industry: thrips (usually western flower thrips) and Bemisia whitefly.

Here’s how things are shaping up with these pests and where they might be going.

Continue reading “What you NEED TO KNOW about Thrips and Whitefly Control: September Update”

Which Pesticides are Effective for Whitefly?

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Whitefly – especially Bemisa whitefly – are STILL one of the hardest insects to control with pesticides in the greenhouse industry,

Efficacy trials are key to keeping growers informed about which chemicals currently work and which don’t for Bemisia whitefly. 

Entomologists at the University of Maryland and Delaware recently did such a study, and included newer pesticide registrations. If you missed the article in the July issue of Grower Talks magazine, keep reading for the link to their results and a Canadian take on the study.

 

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Japanese Beetles are in Flight! How to control JB under the new GCP regulations.

JB Pesticide timing InfographicJapanese Beetle (Popillia japonica) adults are starting to take flight in southern Ontario.   They have been spotted in Hamilton and Niagara this week. Read on for an updated post on WHAT and WHEN to spray for JB to meet certification requirements if you ship product outside Ontario.

Continue reading “Japanese Beetles are in Flight! How to control JB under the new GCP regulations.”

99 Poinsettia Problems: Your Monthly Scouting Guide

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This post on poinsettia problems was contributed to by Drs. Chevonne Dayboll and Sarah Jandricic.

Okay, so Poinsettia don’t really get that many problems.  But when issues arise, they can hit a crop fast and hard.  Whitefly, Lewis mite, root rots, and nutritional issues can all quickly derail a quality crop.

Here’s a month by month guide on what you should be looking for to prevent small problems from becoming big issues.

 

 

Continue reading “99 Poinsettia Problems: Your Monthly Scouting Guide”

Now’s the Time for Whitefly Prevention: Registered Products for Poinsettia Dips

OLYMPUS DIGITAL CAMERAHere in Canada, we’ve been talking for years about research on the highly effective method of dipping your poinsettia cuttings in low-risk pesticides to reduce starting whitefly populations

Thanks to Dr. Rose Buitenhuis (VRIC), Cary Gates (FCO) and BioWorks, the label for BotaniGard WP has now officially been expanded to include dip applications.  This now adds to our arsenal (see below for more dip products).

Read on for the current BotaniGard label and how dipping can help improve your Bemisia whitefly program this year, whether you’re using pesticides or biocontrol.

Continue reading “Now’s the Time for Whitefly Prevention: Registered Products for Poinsettia Dips”