Japanese Beetles Have Started To Emerge

<a href="/clm/species/popillia_japonica"><em>Popillia japonica</em></a> (Japanese Beetle) adult on cedar.       Japanese Beetle (Popillia japonica) adults are starting to take flight in southern Ontario!  They have been spotted in Niagara this week. Continue reading

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The Monday Report – June 29th

GypsyMothLarvaHideAfternoonYellowHeadJune19_17_01               Gypsy moth larvae have donned their yellow heads and are much longer than 2.5 cm…..which means they are no longer susceptible to the biocontrol Bacillus thuringiensis (B.t./Dipel/Foray). Continue reading

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Late Spring IPM for Landscape and Nursery

maple anthracnose

Maple anthracnose, caused by several different fungi, are quite common this year due to cooler temps and frequent rains.

Foliar diseases such as Anthracnose can be seen on deciduous trees in the landscape, especially on maple, ash and oak.  The fungus infects leaf tissue as it is emerging, especially during cool, wet springs.  Fungal infection causes some distortion and necrosis.  Infected leaves usually remain functional.  Fear not, symptoms will soon be masked by the emergence of the second flush of leaves. Continue reading

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Boxwood Leafminer Adults Are Flying Where Black Locusts are in Flower Bud!

BoxLeafMinerDamageApril

Boxwoods in the landscape not looking so good?  Are you seeing a lot of yellow-brown spots on leaves? Continue reading

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

Box tree moth larva
Mid Instar Larva of Box Tree Moth (Cydalima perspectalis) can be found actively feeding on boxwood in some residential gardens. This is the perfect time to spray biological insecticides like Dipel, Xentari. (photo: J. Llewellyn).
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BANNER Year For Gypsy Moth Larvae!

First instar Gypsy moth (Lymantria dispar) larvae have hatched and are dispersing!

Larvae produce silken threads and take a ride in the wind in hopes of landing on other delicious botanical hosts.

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The Monday Report: May 25, 2020

We can still see the remains of low temperature injury from a couple of weeks ago.  Not to worry, the next set of leaves will cover up the desiccated leaves and stems.

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Protect Evergreens Starting As New Growth Emerges

Monitor for needlecast and blight diseases on older foliage where new foliage is emerging on PINE and SPRUCE.

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Here Comes the Warmer Weather!

Certain businesses allowed to reopen under strict safety guidelines across Ontario, including garden centres and nurseries. (File)
Environment Canada is calling for sunshine and highs in the mid-20’s C by next weekend.  Get our your sunblock Ontario, this is happening!

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Scout Evergreens Early to Combat Insects & Mites This Week

Look for small, white, woolly tufts or masses on the twigs of hemlock (Tsuga canadensis) (Photos: Julie Holmes, CFIA). It is still a good time to scout for Hemlock Woolly Adelgid (Adelges tsugae) because of the visibility of the white covering on the egg masses.    Continue reading

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