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Tag Archives: Jen Llewellyn
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
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.
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
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.
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
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
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).