Poinsettias may only be 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? By implementing some preventative measures right now (i.e. while cuttings are still in trays, or just potted up), you can save yourself a lot of headaches later.
Click here to see the preventative measures listed by Greenhouse Floriculture IPM Specialist Sarah Jandricic on the ONfloriculture blog

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Sarah Jandricic, Greenhouse Floriculture IPM Specialist
Tips on pest, disease prevention in poinsettia
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