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Category Archives: Insects
Expanded Regulated Area for Hemlock Woolly Adelgid
The Canadian Food Inspection Agency (CFIA) has expanded the regulated area for Hemlock Woolly Adelgid in Ontario. The new regulated area now includes the Regional Municipality of Niagara, Haldimand County, the City of Hamilton and the Township of Alnwick/Haldimand. This expansion … Continue reading
Posted in Insects, Invasive Species, IPM
Tagged hemlock cfia, hemlock regulated area ontario, hemlock woolly adelgid, hwa
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Boxwoods: Time to check & treat for the next generation of box tree moth
Adult box tree moths have been observed and captured throughout Southern Ontario over the last couple weeks and as their eggs hatch, early instar box tree moth larvae will start to feed again on boxwood shrubs. This second period of … Continue reading
Understanding and Managing the Red-headed Flea Beetle
It’s already that time of summer… the return of the red-headed flea beetle. The red-headed flea beetle (Systena frontalis) can be a significant pest in nurseries, particularly affecting container-grown ornamental plants. Adult beetles tend to emerge in late June to … Continue reading
Japanese Beetles Have Started To Emerge in Ontario
Japanese Beetle (Popillia japonica) adults are starting to take flight in southern Ontario! We had our first pheromone trap captures yesterday, Monday June 23, 2025 in Vineland.
Posted in Insects, Invasive Species, IPM, landscape
Tagged beetles, japanese beetle, JB, JB adults, JB emergence, JB infographic, white grubs
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Box Tree Moth are flying: check your traps!
Today we had our first box tree moth (adult) captures of the season in our pheromone surveillance traps. Additionally, public observations on iNaturalist of the months started rolling in over the weekend from areas of Toronto, Windsor, Simcoe, Brampton, London … Continue reading
Posted in box tree moth, Insects, Invasive Species, IPM
Tagged box tree moth, boxwood, boxwood moth, BTM, BTM IPM, BTM ontario, ipm in the landscape, pest management
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Nursery IPM Update: June 3, 2025
Due to cooler temperatures last week, most regions of Southern Ontario are still between the 100-150 GDD (base 10°C) range with full bloom of Aesculus hippocastanum and spireae x vanhouttei. In more southern regions such as Harrow, GDD is closer … Continue reading
Posted in Insects, IPM, Weekly Nursery Landscape Report
Tagged box tree moth IPM, box tree moth spring, elm zigzag sawfly, honeylocust plant bug, hydrangea bacterial leaf spot, hydrangea disease, landscape plant IPM, landscape plant pests, nursery crops, Nursery IPM, nursery IPM report, Ontario nursery IPM, Ontario pests, Ornamental IPM, PLH, potato leaf hopper, strawberry root weevil
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Nursery IPM Update: May 21, 2025
Welcome to the first nursery pest update for 2025! Most regions of Southern Ontario are between the 50-100 GDD (base 10°C) range with full bloom of Syringa vulgaris. In more southern regions such as Harrow and the Niagara peninsula, GDD … Continue reading
Posted in Insects, IPM, Weekly Nursery Landscape Report
Tagged box tree moth, boxwood pests, insects, ipm in the nursery, nature, nursery insect pests, Nursery IPM, nursery IPM report, ontario nursery crops, Ornamental IPM, photography, plants, publication 840, spongy moth, spruce spider mite, travel
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Your Yearly Explainer of Japanese Beetle Requirements: Get Those Treatments on Before May 15!
For those of you planning on shipping ornamental products out of Ontario anytime between May 15 and June 15, this is your yearly reminder to get your curative application of Acelepryn on BEFORE May 15! Recall that no pesticides are allowed when Japanese … Continue reading
Keep a watchful eye, for the Spotted Lanternfly!
While there are still NO known ESTABLISHED populations in Ontario, there have been more recent interceptions and sightings of the invasive Spotted Lanternfly this fall, with a few sighted in the Windsor-Essex region.
Posted in Insects, Invasive Species, landscape
Tagged invasive insects, Invasive species, invasive species ontario, lanternfly, Report SLF, SLF, spotted lanternfly
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August is Tree Check Month!
This annual campaign urges Canadians to thoroughly inspect trees and plants in their backyards, gardens, parks, and vehicles for invasive pests.
