“Sticking” it to high populations of thrips


Can patterned tapes significantly improve thrips catches?

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 key to getting an edge over thrips. This post discusses the latest research on mass trapping of thrips in ornamentals, including patterned sticky tapes and the use of pheromones.  

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

Now’s the time to be proactive about poinsettia nutrition

If you’re producing poinsettias this year, you are probably just about finished with potting up your newly rooted cuttings. Keeping an eye on your crop throughout the production cycle will help to identify problems early, and allow you to correct the problem before it gets out-of-hand.   Consider this blog post your “cheat sheet” on identifying poinsettia nutrition related disorders. Continue reading

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Pest & Disease Prevention in Poinsettia – Now’s the Time!

Poinsettias may only in the greenhouse for a relatively small time, but they can have BIG problems compared to other crops.  Lewis mites, Pythium, and the dreaded Q-Biotype of whitefly all have the potential to make a significant number of plants unsaleable.  So what’s a grower to do?   Continue reading

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Keep those cuttings cool!

cool point

Ensure your cuttings stay cool in the heat, so they grow into “cool” mature poinsettias!

Environment Canada has placed most of Southern Ontario under a Heat Alert for the next few days.  It’s the time of year for sticking poinsettia cuttings, and cuttings of any floral crop are susceptible to extreme temperatures.  Plants are just like people, crank up the heat and they put all their energy into just surviving the conditions, not forcing roots. Stressful conditions at rooting can lead to poor plant quality and cause defects that will be seen later in production like poor branching and leaf deformities. Continue reading

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Japanese Beetle Adults Starting to Emerge

For those of you also growing nursery crops or outdoor ornamentals, check out this post from ONnurserycrops on Japanese beetle-sightings in the area and accepted control measures.

Japanese Beetle (Popillia japonica) adults are starting to take flight in southern Ontario!

via Japanese Beetle Adults Starting to Emerge — onnurserycrops

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Nutrient Deficiency Refresher

As we start to move into fall and winter flower crop production cycles, it’s a good time to go back through some basics about nutrient deficiencies.

No matter where you are in a cropping cycle, nutrition problems can be tricky to figure out.  The good thing is they can be differentiated from disease or pest issues based on a few key observations:

  • If the damage is uniform and crop wide, it’s most likely a nutritional issue
  • If the damage is localized or more random, it’s most likely a disease or pest issue

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


Thrips damage on mums.

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 on imported mum cuttings. Here’s the scoop and what you can do about it.


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