Author Archives: Jen Llewellyn

Don’t Kiss All Your Ash Goodbye Just Yet – Part II

In 2016, approximately 4,688 hectares of ash trees were found to be in decline or mortality due to Emerald Ash Borer (Agrilus planipennis, EAB) in the province of Ontario. That’s down from just over 41,000 ha in 2015. This data … Continue reading

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Calling All Niagara Area Nursery Growers – meeting October 30th

                           2016 is the year we remember as being unusually dry across much of Niagara Region. The dry conditions highlighted the need for access to irrigation water and … Continue reading

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Gearing Up for Fall Dormant Oil

  Many horticultural professionals are gearing up for fall applications of horticultural oil. But the warm weather is causing trees to retain foliage later than they usually would, delaying dormant applications of horticultural oil.  The full, dormant rate of horticultural oil … Continue reading

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A Few Opportunities for IPM

 Bright, orange-red lesions of Pear Trellis rust (Gymnosporangium sabinae) are still quite visible on ornamental pear trees right now. Take a look at the undersides of those rust lesions to find sporulating structures, called “aecia” (pronounced “ay-see-a”).  These stringy, trellis-like … Continue reading

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Hold Off on Fall Fertilizer Where Soil is Dry

 Warm, sunny days and cold nights give rise to the most spectacular fall colours. Unfortunately, that long stretch of unseasonable warm, cloudy days and warm nights in September certainly stalled out leaf colour development this year.

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Now is the Time to Manage Beech Scale

  Introduced Beech scale (Cryptococcus fagisugae) is easier to see this time of year on our native American beech (Fagus grandifolia).  That’s because of the white waxy coverings the females produce to protect their eggs.  Look for

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IPM This Week August 17/17

Magnolia Scale has had another great year in the Ontario landscape. This means tons of honeydew, ants, wasps and other nuisance insects that plague our beloved magnolia trees. 

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