Category Archives: Weather

The Monday Report: May 25, 2020

We can still see the remains of low temperature injury from a couple of weeks ago.  Not to worry, the next set of leaves will cover up the desiccated leaves and stems.

Posted in Arboriculture, Christmas Trees, Diseases, Environment, Insects, IPM, landscape, Nursery Production, Plant Nutrition, Weather, Weekly Nursery Landscape Report | Tagged , , , | Leave a comment

Here Comes the Warmer Weather!

  What a treat! Several of our sugar maples are blooming this year all over southern Ontario, from Barrie to Niagara, these native beauties are gracing our landscapes with blooms.  Its been 5 years since sugar maples were blooming like this. The cooler weather continues!  Climatologists are predicting that our daytime temperatures will stay moderate until about the […]

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Posted in Arboriculture, Borers in Landscape Trees, Christmas Trees, Diseases, IPM, landscape, Nursery Production, Weather, Weekly Nursery Landscape Report | Tagged , , , , , , , , | Leave a comment

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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Spruce needle drop in the Landscape?

  It seems to be one of the most common complaints this spring: my spruce tree is turning brown and dropping needles!!!!

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