Category Archives: Weather

Crab-apples looking…..rough?

   Yes the exceptionally cold, wet, cloudy spring has been particularly supportive of fungal and bacterial diseases during leaf emergence this year.  And our ornamental crab-apples are paying the price with thinning canopies and dieback. Click HERE for the AUDIO … Continue reading

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Welcome LO Nursery Scout and OMAFRA Students!

Welcome to our new 2017 LO Nursery Scout and OMAFRA Summer Student!           Melissa Huntley (left) and Andrea Badder (right) have been working diligently to scout for pests and abiotic issues in nursery crops.  The cold, … Continue reading

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Vancouver, Ontario ?

If you look at the 14 day forecast, you won’t believe your eyes!  Its been a balmy autumn so far, and a nice one for those horticulturalists that are working outside.  High’s of 20 C were reported in the Niagara peninsula … Continue reading

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Are you seeing branch dieback on Honeylocust?

Have you noticed branches dying on Honeylocust this summer?  We’ve had reports of branch dieback on urban street trees in the Hamilton and London areas last month. 

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Sudden Dieback on Twigs?

Horticulturalists are reporting sudden leaf and twig dieback on several different species of deciduous trees across southern Ontairo.

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Frost Warning Tonight

This article was adapted from an article by Sean Westerveld,                                             OMAFRA Ginseng and Medicinal Herb Specialist out of … Continue reading

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EVERGREENS: Winter Desiccation or a Pest Issue?

I had a request for an article on diagnosing winter desiccation versus pest and disease issues on evergreens.  I find diagnosing diseases of evergreens versus physiological and abiotic disorders to be tricky.  But here is the decision-making process that I … Continue reading

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