Tag Archives: Jen Llewellyn

IPM in early August

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

                     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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Are You Seeing Nutritional Deficiency Symptoms on Woody Plants?

                    Do you ever see chlorotic or stunted leaves and wonder if it could be a particular nutrient deficiency?  Soil nutrient testing can be a good tool to assess levels of … Continue reading

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Time To Prune Boxwood and Eastern White Cedar

              Remember all those yellow spots on boxwood leaves we had this spring?  These were the feeding sites of the overwintering larvae of boxwood leafminer (Monarthropalpus buxi, M. flavus).

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IPM This Week – July 9, 2018

                 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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The Beetles Are Back Again

                 Japanese Beetle (Popillia japonica) adults are starting to take flight in southern Ontario!

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Happy Summer Solstice (Yesterday) Eh?

One of the most filthiest scale insect pests known to horticulturalists, the Euonymus scale (Unaspis euonymi) is a tiny little armored scale that covets evergreen Euonymus fortunei in the garden or landscape.  Adult females have a dark cover that is wider at the posterior end, sea-shell in appearance with white margins. The smaller males have […]

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