Category Archives: Arboriculture

Get Ready for Fall Dormant Horticultural Oil

Posted on October 6, 2021 by Jen Llewellyn

In mid-late autumn, we have an opportunity to manage some of our plant pests, such as mite eggs and scale insect nymphs, before they go completely dormant. Now that trees are starting to drop their leaves and the weather has … Continue reading →

Posted in Arboriculture, Insects, IPM, landscape, Nursery Production, Weather | Tagged dormant oil, fall dormant oil, magnolia scale, onnurserycrops, overwintering pests, pear leaf blister mite | Leave a comment

Monitor Beech Trees For Introduced Beech Scale Nymphs in the Coming Weeks

Posted on September 1, 2021 by Jen Llewellyn

Introduced Beech scale (Cryptococcus fagisugae) goes hand in hand with beech bark disease (Neonectria faginata and N. ditissima). It is believed that the wounds made by the tiny scale nymphs create entry points for the lethal fungal disease. Beech scale … Continue reading →

Posted in Arboriculture, Insects, IPM, landscape, Weekly Nursery Landscape Report | Tagged beech bark disease, beech scale, bugfinder, Jen Llewellyn | Leave a comment

Start Treating for the 2nd Generation of BTM Larvae in Toronto

Posted on July 16, 2021 by Jen Llewellyn

Now is the time to detect and treat for actively feeding box tree moth larvae in Toronto Continue reading →

Posted in Arboriculture, Insects, Invasive Species, IPM, landscape | Tagged box tree moth, cydalima perspectalis, invasive pests, Invasive species, ipm in the landscape, omafra, onnurserycrops | Leave a comment

NOW IS THE TIME to Treat for Box Tree Moth Larvae in Toronto

Posted on May 21, 2021 by Jen Llewellyn

An Ill Wind That Blows No Good….#GypsyMoth 2021

Posted on May 18, 2021 by Jen Llewellyn

First instar Gypsy moth (Lymantria dispar) larvae have hatched and are dispersing, especially in the Southwestern part of the province! Continue reading →

Posted in Arboriculture, Insects, landscape, Nursery Production, Weekly Nursery Landscape Report | Tagged bugfinder, dave cheung, gypsy moth, gypsymoth2021, Jen Llewellyn, lymantria dispar, onnurserycrops | Leave a comment

Box Tree Moth Larvae Are Starting to Feed in Toronto

Posted on May 6, 2021 by Jen Llewellyn

They’re BACK! Gypsy moth are hatching!

Posted on May 3, 2021 by Jen Llewellyn

Posted in Arboriculture, Insects, landscape, Nursery Production, Weekly Nursery Landscape Report | Tagged biocontrol, bugfinder, dave cheung, fall cankerworm, forest tent caterpillar, gypsy moth, Jen Llewellyn | Leave a comment

Those Precocious Blooms of April!

Posted on April 17, 2021 by Jen Llewellyn

outher Norway maple (Acer platanoides and its cultivars) are just starting to bloom in the GTA, making this one of the earliest blooms for trees since 2012! Continue reading →

Posted in Arboriculture, Diseases, IPM, Nursery Production, Weekly Nursery Landscape Report | Tagged dave cheung, ipm in the landscape, ipm in the nursery, Jen Llewellyn, plant phenology | Leave a comment

April Showers and April IPM Opportunities

Posted on April 13, 2021 by Jen Llewellyn

Unusually warm weather has hastened the flowering of many trees, shrubs and bulbs! Although we have more seasonable daytime high’s in the forecast for the next week, night time low’s will be above 0C in southern Ontario. Silver maples may … Continue reading →

Posted in Arboriculture, IPM, landscape | Tagged bagworm, bugfinder, city of toronto, eastern tent caterpillar, fall cankerworm, gypsy moth, Jen Llewellyn | Leave a comment

2021 Will Be Remembered as “The Year of the Gypsy Moth”

Posted on April 8, 2021 by Jen Llewellyn

Posted in Arboriculture, Insects, IPM, landscape, Weekly Nursery Landscape Report | Tagged biocontrol, bugfinder, dave cheung, gypsy moth, Jen Llewellyn, lymantria dispar | Leave a comment