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Category Archives: IPM
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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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
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
Protect Evergreens Now, New Growth is Emerging!
Monitor for needlecast and blight diseases on older foliage where new foliage is emerging on PINE and SPRUCE.
