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Author Archives: Jen Llewellyn
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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Nursery Grower Workshop and Tour, Milton, Wednesday, July 20th
Milton IPPS Area Meeting & Tour — July 20 at the Landscape Ontario Office (#7856 Fifth Line South, Milton) Innovation: Making it Work
Posted in Uncategorized
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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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New IPM Database Tool for Ontario
A new management tool for planning your IPM activities at your nursery has been developed. “GDD” is online, and uses the current growing degree days to determine what pests you should be scouting for, and what stage they’re at. Susceptibility … Continue reading
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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Jumping for Joy in the Foliage (June 8)
What a spring for cankerworms! A few species of cankerworms (Geometrids) can be found feeding on trees and shrubs in the landscape and nursery. The greater Hamilton area is seeing significant populations of Fall Cankerworm, pale-green larvae that move like … Continue reading
Posted in Christmas Trees, Insects, IPM, Nursery Production
Tagged ipm nursery, Jen Llewellyn
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Here Comes The Humidity
The air was so dry up until just recently, it was SO nice. You know? If you’re like me, humidity is an important thing. Sure it means more plant diseases are in our future. But it also rakes havoc with my hair. The … Continue reading
Get OUT! Honeylocust Plant Bugs Are
Honeylocust Plant Bug nymphs were found feeding on emerging foliage of Gleditsia tricanthos (honeylocust) in the Greater Toronto area this week. Plant bugs are tiny, yellow-green insects that feed with piercing-sucking mouthparts on emerging foliage. They have a toxic … Continue reading
Those Darling Buds of May 2 4
Oh yes Oh yes the long weekend is finally here! And so is the heat! (Photo: One more shot Rog on Flickr) Climatologists are expecting daily high’s of 20C and above for the next several days. Night time low’s are … Continue reading
