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Tag Archives: Jen Llewellyn
Good News! Beneficial Insects Found on Magnolia.
So I started getting some queries about a new mealybug found on Magnolias in the landscape. You can imagine my despair, the poor magnolias have their fair share of sucking insect pest problems with the glut of Magnolia scale we … Continue reading
Posted in IPM
Tagged Hyperaspis, Jen Llewellyn, magnolia scale predator, Michael Raupp
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Magnolia Scale, the plague of the landscape
Magnolia Scale is just rampant this year again. And to make matters worse, there seems to be two developmental groups of them, a smaller subset about 3 weeks behind the older ones (see photo above). This means a second set of … Continue reading
Posted in IPM, Weekly Nursery Landscape Report
Tagged arboriculture, fall webworm, Integrated pest management, IPM, Jen Llewellyn, magnolia scale
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The Thursday Report – July 21
Environment Canada is calling for very hot and humid weather to continue into this weekend and early next week. There is a 40-50% chance of precipitation in southern Ontario for tomorrow, with a greater chance of showers on Monday. The UV index is … Continue reading
Posted in Weekly Nursery Landscape Report
Tagged arboriculture, fall webworm, IPM, Jen Llewellyn, landscape plants, nursery crops
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Research Shows: Some Norway Maple Cultivars Are Not Invasive
When you consider all of the trees that are grown for street plantings in the urban landscape, you will quickly come to realize that the number of possibilities can be quite small because of poor soil conditions and exposure. Our … Continue reading
Posted in Invasive Species
Tagged James Sellmer, Janine Conklin, Jen Llewellyn, norway maple, ontario invasive species act
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July 6 – IPM in the Nursery and Landscape
Hot, dry conditions continue for much of southern Ontario. Environment Canada says we’ve had one of the driest Junes on record, since 1991. This has put a lot of stress on plants and water resources. Newly planted nursery stock and landscape plants should be … Continue reading
Japanese Beetle Adults Starting to Emerge
Japanese Beetle (Popillia japonica) adults are starting to take flight in southern Ontario!
Scale Crawlers are OUT!
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 … Continue reading
Posted in Insects, IPM, landscape, Nursery Production
Tagged euonymus scale, fletcher scale, Jen Llewellyn, taxus scale
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Hands-On Workshop for Urban Tree Care on July 14 – Guelph
Arboriculture & Landscape Pro’s: this workshop is for you: Hands-On IPM in the Woody Landscape Thursday, July 14 at the University of Guelph -Arboretum Centre. Want to be able to detect and confidently identify pest and physiological issues for your clients? Want … Continue reading
Posted in Educational Opportunities
Tagged isa ontario workshop, Jen Llewellyn, ruurrd van de Ven, sean fox
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A Couple of Diseases on Trees
Some diseases and pests are easy to spot, many are not. Apple scab is a good example of a disease that is kind of subtle, especially in the early stages of development. Plus it has diffuse spot margins, making it … Continue reading
Posted in Uncategorized
Tagged apple scab, Jen Llewellyn, oak leaf blister, taphrina caerulescens, venturia innaequalis
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Early Spruce Sawfly Damage Can Look Like Needle Burn
Take a quick scan of the new growth on spruce, especially Colorado spruce (Picea pungens). Look for straw-like needles that are withering….and the disappearance of needles all together. This is very typical damage of Yellow Headed Spruce Sawfly (Pikonema alaskensis).
Posted in Arboriculture, Insects, IPM
Tagged gypsy moth, Jen Llewellyn, spruce sawfly, yellow headed spruce sawfly
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