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Category Archives: Weather
Now that trees have dropped their leaves and the weather has turned mild for a bit, hort professionals have a short bonus shot at managing overwintering plant pests! The full, dormant rate of horticultural oil is excellent for smothering juvenile … Continue reading
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.
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 […]
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
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
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
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.
Horticulturalists are reporting sudden leaf and twig dieback on several different species of deciduous trees across southern Ontairo.
This article was adapted from an article by Sean Westerveld, OMAFRA Ginseng and Medicinal Herb Specialist out of … Continue reading
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