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Tag Archives: Jen Llewellyn
But Baby, It’s Cold Outside
Fireblight (apple, pear, see above) and Apple Scab (apple) diseases are normally reproducing and spreading this time of year. This week we are more concerned about Apple Scab. The cool weather has really reduced the activity of fireblight bacteria and so the risk of fireblight is looking low again this week.
Posted in Diseases, IPM, landscape, Nursery Production
Tagged apple scab, fireblight, Jen Llewellyn, mike celetti
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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
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.
Posted in landscape, Nursery Production, Plant Nutrition
Tagged fall fertilizing, Jen Llewellyn, onnurserycrops
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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
Posted in Arboriculture, Insects, Weekly Nursery Landscape Report
Tagged beech scale, bugfinder, Jen Llewellyn, magnolia scale
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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.
Posted in IPM, Weekly Nursery Landscape Report
Tagged bugfinder, dave cheung, fall webworm, Integrated pest management, Jen Llewellyn, magnolia scale
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The Tuesday Report – July 25
Click HERE for the AUDIO version of this blog post. Um what happened to our crabapple trees? You know what happened, all that rain during leaf emergence made … Continue reading
Posted in Weekly Nursery Landscape Report
Tagged arboriculture, fall webworm, IPM, Jen Llewellyn, landscape plants, nursery crops
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Now Is The Time To Test Leaves for Nutritional Content
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 … Continue reading
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).
IPM This Week – July 11
Click HERE for the AUDIO version of this blog post. Frequent precipitation events continue to shower outdoor ornamentals with too much love. Leaf diseases are rampant, making plants … Continue reading
Hay Hay We’re the……Scarab Beetles!
Japanese Beetle (Popillia japonica) adults are starting to take flight in southern Ontario!
Posted in Insects, IPM
Tagged european chafer, japanese beetle, Jen Llewellyn, onnurserycrops
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