Category Archives: Weekly Nursery Landscape Report

IPM This Week (June 10)

Posted on June 11, 2019 by Jen Llewellyn

Foliar diseases such as Anthracnose can be seen on deciduous trees in the landscape, especially on maple, ash and oak.  The fungus infects leaf tissue as it is emerging, especially during cool, wet springs.  Fungal infection causes some distortion and … Continue reading →

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Boxwood Leafminer Adults Are Flying

Posted on June 10, 2019 by Jen Llewellyn

Boxwoods in the landscape not looking so good coming out of the winter?  Are you seeing a lot of yellow leaves? Can you see any yellow-green-brown spots?

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Leps Looking Moderate-High in Some Areas

Posted on May 28, 2019 by Jen Llewellyn

            Seeing holes in newly emerged leaves but all you can find are dark, fuzzy little caterpillars?  Gypsy moth larvae have also begun to feed.  Look for holes in leaves and turn over inspect  leaf … Continue reading →

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Welcoming The Victoria Day Long Weekend!

Posted on May 17, 2019 by Jen Llewellyn

  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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Did You Manage to Manage Beech Scale This Fall?

Posted on October 29, 2018 by Jen Llewellyn

  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. 

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You Must Remember This?

Posted on October 23, 2018 by Jen Llewellyn

Now is the time for dormant oil applications to smother overwintering pear leaf blister mites Continue reading →

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The Snail that Broke the Grower’s Back

Posted on August 28, 2018 by Jen Llewellyn

                        There was quite a lot of dieback on woody shrubs and trees this spring and summer, some of it is still just showing up. Vertical cracks in juvenile … Continue reading →

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IPM in early August

Posted on August 8, 2018 by Jen Llewellyn

This beautiful, fat four-horned Sphinx moth larva  (Order: Lepidoptera; Family: Sphingidae; Species: Ceratomia amyntor) was found chewing on elm leaves by OMAFRA Field Tech Student Kaitlin Creighton and LO Nursery Scout Charlotte Thomson.  Knowing their supervisor’s sense of humour, Kait … Continue reading →

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The Tuesday Report – July 24, 2018

Posted on July 24, 2018 by Jen Llewellyn

                     Are you seeing black marginal necrosis on the newest growth of Pear (Pyrus) trees?  We saw the same phenomenon back in 2016 and after several attempts at culturing pathogens failed, … Continue reading →

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IPM This Week – July 9, 2018

Posted on July 9, 2018 by Jen Llewellyn

                 Fall webworm (Hyphantria cunea) are laying their eggs on foliage (Juglans, Prunus, Betula, Fraxinus) at this time (Photo: Charlotte Thomson, LO Nursery Scout).  They have multiple generations per year and most people … Continue reading →

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