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Author Archives: Jen Llewellyn
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
Posted in Weekly Nursery Landscape Report
Tagged arboriculture, fall webworm, IPM, Jen Llewellyn, landscape plants, nursery crops
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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
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 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
A Very Special Field Course for WannabeEntomoRockstars (July 31-Aug 2)
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Japanese beetles are in flight! What Growers Need to Know — from ONfloriculture
The Japanese beetle season is upon us once again! Adults were spotted this week in Southern Ontario. Shipping outside Ontario or need to meet the requirements of the JB Certification Program? Not sure what’s required? This post contains a treatment … Continue reading
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The Beetles Are Back Again
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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Dang, It’s Still Dry
Although many parts of southern Ontario received a nice long rainfall this weekend….many of those areas received only 6 or 7 mm and not the 15-20 mm our soils were needing. Where a thick layer of mulch is used in … Continue reading
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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 […]
Posted in Insects, IPM, landscape, Nursery Production
Tagged bugfinder, dave cheung, Jen Llewellyn, onnurserycrops
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Injectable Solutions for Landscape Trees
Emerald ash borer adults are laying eggs. Injectable insecticides are available to help keep trees healthy.
