Category Archives: Greenhouse Environment

Botrytis Bumming You Out?

With the intense period of rain we just had, and with MORE rain coming on Friday, it’s time to think about Botrytis control and prevention.  One of the most common and destructive diseases of greenhouse crops, outbreaks usually follow periods of … Continue reading

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Improperly ventilated heaters & ethylene damage

Spring is on its way, and with cold nights and warmer days we are seeing a common spring problem – poor air quality damage on spring bedding crops.  Symptoms, solutions and preventative measures are included in this 2017 update to … Continue reading

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Stalling out: Strategies for success

Starting to feel a bit bummed out by all this gloomy weather?  Imagine how your poor plants feel!  All clouds and no sun leads to lots of fun with production schedules, nutrition and proper plant development.

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‘Tis the Season for Powdery Mildew; Here’s what Ontario’s Flower Growers can do .

All through the night while the growers were sleeping, spores of Erysiphe, Leveillula, Microsphaera and Sphaerotheca were teeming. Caused by one of these many pathogenic fungi, Powdery Mildew is often white and felt-like to the eye. OMAFRA’s Greenhouse Elves are on … Continue reading

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Low Light and High Humidity: Identifying Oedema

Oedema or edema, also known as intumescence.  This physiological disorder usually appears during periods of low light – from now through the fall, winter and into the spring.  If you’ve noticed salt-like crystals, odd tumour-like growths or water-soaked spots on … Continue reading

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Keep those cuttings cool!

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, … Continue reading

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Supplemental Lighting Options for Bedding Plant Seedling Production

Happy spring!  With the season in full swing, we know that growers are busy this month.  I read an interesting article on the effects of supplemental LED lighting in bedding plants this week, and I’ve summarized it here with the … Continue reading

Posted in Greenhouse Environment, Lighting, Spring crops | Tagged , , , , , , | 2 Comments