Category Archives: Diseases

Seeing Dieback on Maples?

Several Landscape Professionals are reporting significant canopy dieback in maple trees this year.

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Injectable Solutions for Landscape Trees

Emerald ash borer adults are laying eggs. Injectable insecticides are available to help keep trees healthy.

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IPM This Week (June 10)

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 … Continue reading

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Welcoming The Victoria Day Long Weekend!

  What a treat! Several of our sugar maples are blooming this year all over southern Ontario, from Barrie to Niagara, these native beauties are gracing our landscapes with blooms.  Its been 5 years since sugar maples were blooming like this. The cooler weather continues!  Climatologists are predicting that our daytime temperatures will stay moderate until about the […]

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Protect Susceptible Apple, Crabapple and Pear from Fireblight and Apple Scab

Fireblight (apple, pear, see above) and Apple Scab (apple) diseases are normally reproducing and spreading this time of year.  This week we are more concerned about Apple Scab.  The cool weather has really reduced the activity of fireblight bacteria and so the risk of fireblight is looking low again this week.    

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Protect Fruit Trees From Disease Starting @ Green Tip and Early Bloom

Fireblight (apple, pear, see above) and Apple Scab (apple) diseases are normally reproducing and spreading this time of year.  This week we are more concerned about Apple Scab.  The cool weather has really reduced the activity of fireblight bacteria and so the risk of fireblight is looking low again this week.    

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Injectable Solutions for Landscape Trees

Emerald ash borer adults are laying eggs.  Injectable insecticides are available to help keep trees healthy.

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It’s June 1st Already!

 We’ve just entered one of the busiest times of year for IPM managers of outdoor ornamentals. Plants are lush and pests and diseases are hungry. Are you seeing discoloured, pimple-like spots on the foliage of pear trees?

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Protect Evergreens Now, New Growth is Starting To Emerge!

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

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Welcoming The Victoria Day Long Weekend!

  What a treat! Several of our sugar maples are blooming this year all over southern Ontario, from Barrie to Niagara, these native beauties are gracing our landscapes with blooms.  Its been 5 years since sugar maples were blooming like this. The cooler weather continues!  Climatologists are predicting that our daytime temperatures will stay moderate until about the […]

Continue reading

Posted in Arboriculture, Diseases, IPM, Nursery Production, Weekly Nursery Landscape Report | Tagged , , , , | Leave a comment