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Tag Archives: onnurserycrops
Insect Pests on Evergreens Right Now
Look for small, white, woolly tufts or masses on the twigs of hemlock (Tsuga canadensis) (Photos: Julie Holmes, CFIA). It is still a good time to scout for Hemlock Woolly Adelgid (Adelges tsugae) because of the visibility of the white … Continue reading
Posted in Insects, landscape, Nursery Production
Tagged evergreen ipm, Jen Llewellyn, onnurserycrops
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Protect Crabapple, Serviceberry, Pears Now From Juniper Rusts
Gymnosporangium rusts are sporulating now on Juniperus hosts. Look for orange, gelatinous structures on foliage and stems of various Juniperus spp. They are sporulating both in container production and in the field. They can be found sporulating when the Cercis … Continue reading
Posted in Diseases, landscape, Nursery Production
Tagged cedar apple rust, gymnosporangium rust, Jen Llewellyn, onnurserycrops
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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.
Posted in landscape, Nursery Production, Plant Nutrition
Tagged fall fertilizing, Jen Llewellyn, onnurserycrops
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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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Pesky Pests Running Among Us
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 […]
Posted in Insects, IPM, landscape, Nursery Production
Tagged bugfinder, dave cheung, Jen Llewellyn, onnurserycrops
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Crab-apples looking…..rough?
Yes the exceptionally cold, wet, cloudy spring has been particularly supportive of fungal and bacterial diseases during leaf emergence this year. And our ornamental crab-apples are paying the price with thinning canopies and dieback. Click HERE for the AUDIO … Continue reading
Posted in Diseases, Weather
Tagged apple scab, fireblight, Jen Llewellyn, mike celetti, onnurserycrops
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Injectable Solutions for Landscape Trees
The black locust (Robinia pseudoacacia) are in full bloom as this is the phenology indicator species for the emergence of emerald ash borer adults.
