Category Archives: Registered pesticides

Christmas in July: tips for controlling whitefly in poinsettia. (Hint – start now!).

Poinsettias cuttings are here!   They may only in the greenhouse for a relatively short time, but they can have BIG problems compared to other crops.  Not the least of which is Bemisia whitefly: a pest that can be hard to control with natural enemies and can ALSO be resistant to pesticides.  So what’s a grower […]

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Posted in Bemisia whitefly, biological control, dipping cuttings, imported cuttings, Pest control strategies, Poinsettia, Preventative treatments, Registered pesticides, Whitefly | Tagged , , , , , , , , | 3 Comments

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 … Continue reading

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Two new fungicide registrations!

That’s right!  As of today, flower growers have 2 new weapons against fungal diseases at their disposal. Heritage MAXX (azoxystrobin) and Medallion (fludioxonil) are now registered for use in outdoor and greenhouse ornamentals. Heritage (a Group 11 fungicide) is a systemic fungicide, … Continue reading

Posted in Fungal diseases, Fungicides, New Products, Registered pesticides | Tagged , , , , , , , , , , , , , , , , | 2 Comments

Guide to Weed Control in Ontario

Ontario’s latest Guide to Weed Control is now available as a free PDF from OMAFRA.  Chapter 16 covers weed control in outdoor ornamentals, and includes effectiveness ratings for registered products.  This publication may also be useful for cleaning up weeds outside the greenhouse. Note … Continue reading

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Update on Met52 Availability – EC but no Granular from Plant Products

In anticipation of Monstanto BioAg’s decision regarding re-sourcing Met52, Canadian distributor Plant Products stocked their shelves. Plant Products currently holds over 1000 units of the popular Met 52 EC (emulsifiable concentrate) product.  This should be enough to bridge any gap in supply from Monstanto. … Continue reading

Posted in biological control, biopesticides, IPM tools, Met52 insecticide, pesticides, Registered pesticides, Thrips, Whitefly | Tagged , , , , , , | Leave a comment

How are pesticides registered in Canada?

Ever wonder what, exactly, is involved in getting a pesticide registered for use in Canadian greenhouses – and why it seems to take so long?  This guest post by Cary Gates (Director of Pest Management, Flowers Canada) lifts the curtain on … Continue reading

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