Poinsettia Pest Management Pointers: Receipt Through Potting Up.

Poinsettias are almost here! Instead of covering the whole crop cycle, this year we’re breaking posts down into 4 key growing periods: Receipt/Propagation, Early Production, Late Production, and Finishing.

This post on propagation will cover things you can do now to treat pests and diseases in your cuttings to prevent BIG problems later. And make sure to check out Dr. Chevonne Dayboll’s post from last week, on ensuring cutting quality.

Continue reading “Poinsettia Pest Management Pointers: Receipt Through Potting Up.”

New Virus in Calibrachoa – Identification and Treatment.

Dark green and yellow mottling symptom on foliage. Photo by Heidi Lindberg, MSU Extension.

Several diagnostic labs in the Northeast U.S., as well as our own lab here at the University of Guelph, have received diseased calibrachoa suspected to have chili pepper mild mottle virus (CPMMoV). The supplier has alerted growers of this issue.

Although CPMMoV is NOT a regulated disease by CFIA or the USDA, it can still affect the quality of your crop and lead to losses.

Read on for a link to an excellent blog post on the topic written by Michigan State University Extension. This includes symptoms to look out for, the importance of testing, and what to do if you have it.

Continue reading “New Virus in Calibrachoa – Identification and Treatment.”

Poinsettia Problems: Your Monthly Scouting Guide, 2021

JF14
This post on poinsettia problems was contributed to by Drs. Chevonne Dayboll and Sarah Jandricic.

When poinsettias get problems,  they always seem to hit hard and fast. Things like whitefly, Lewis mite, root rots, and nutritional issues can all quickly derail a quality crop. This is why scouting might be more important in this crop than any other.

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

Continue reading “Poinsettia Problems: Your Monthly Scouting Guide, 2021”

Garden Mums – 2021 Production and Protection Tips

praying mantis on garden mums

This post was contributed to by Drs. Sarah Jandricic, Andrew C. Wylie and Chevonne Dayboll.

Summer is getting underway, and so too are garden mums!  Although generally an easy crop, there several tweaks you can make to help save headaches AND money.

This post has updated information to help you optimize your irrigation, fertilizer and pest management programs in garden mums.

New Resources for Mum Production

Hit your exact ship size on your ship date using Graphical Tracking

Track and even out the growth of your mums using a graphical tracking tool with a few easy steps:

Continue reading “Garden Mums – 2021 Production and Protection Tips”

Preventing Issues in Your Spring Crops: Sanitation, Dips and Bio Tips.

P1010595With the holiday season almost upon us, it’s time to turn our attention to Spring bedding crops. Although here for a brief window, the diversity of these crops means you’re bound to encounter some sort of disease and insect problems.

One way you can head off issues is to plan and prepare now.  This post from January 2020 has important tips on sanitation for common spring crop diseases, dips and early sprays to prevent key pests, as well as tips on where to spend your biocontrol dollars.

Continue reading “Preventing Issues in Your Spring Crops: Sanitation, Dips and Bio Tips.”

Poinsettia Problems: Your Monthly Scouting Guide

JF14
This post on poinsettia problems was contributed to by Drs. Chevonne Dayboll and Sarah Jandricic.

When poinsettias get problems,  they always seem to hit hard and fast. Things like whitefly, Lewis mite, root rots, and nutritional issues can all quickly derail a quality crop. This is why scouting might be more important in this crop than any other.

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

Continue reading “Poinsettia Problems: Your Monthly Scouting Guide”

Dipping Poinsettia Cuttings to Reduce Whitefly 101: 2020 Edition

 

dipping cuttings
Dipping poinsettia cuttings to help lower Bemisia numbers was investigated and perfected by the Biocontrol Lab at the Vineland Research and Innovation Centre in Ontario.

Although we’ve been talking for years here in Canada about dipping your poinsettia cuttings in low-risk pesticides, some growers have yet to take the plunge.

This preventive technique improves efficacy of BOTH biocontrol and pesticide programs for Bemisia, since it lowers your starting pest pressure.

If you’re still unsure of how or when to apply cutting dips, check out the rest of this post.  

 

Continue reading “Dipping Poinsettia Cuttings to Reduce Whitefly 101: 2020 Edition”

Garden Mums – 2020 Production and Protection Tips

praying mantis on garden mumsThis post was contributed to by Drs. Sarah Jandricic and Chevonne Dayboll.

Summer is in full swing, and so too are garden mums!  Although generally an easy crop, there several tweaks you can make to help save headaches AND money.

This post has information to help you optimize your irrigation, fertilizer and pest management programs in garden mums.

Continue reading “Garden Mums – 2020 Production and Protection Tips”

New Chemical Control Option for Thrips and Whitefly

Thrips-tabaci-female-1-1024x683A new pesticide is available  for greenhouse ornamental production in Canada that has shown potential for effective suppression of difficult-to-control thrips and whitefly species.

But to keep this new tool effective, growers will have to use this chemical wisely. Keep reading for  efficacy data on ornamental crops and best management practices for incorporating this chemical into your IPM toolbox.

Continue reading “New Chemical Control Option for Thrips and Whitefly”

Preventing Issues in Your Spring Crops: Sanitation, Dips and Bio Tips.

P1010595With the holiday season over, it’s time to turn our attention to Spring bedding crops. Although here for a brief window, the diversity of these crops means you’re bound to encounter some sort of disease and insect problems.

One way you can head off issues is to plan and prepare now.  This post has important tips on sanitation for common spring crop diseases, dips and early sprays to prevent key pests, as well as tips on where to spend your biocontrol dollars.

Continue reading “Preventing Issues in Your Spring Crops: Sanitation, Dips and Bio Tips.”