Category Archives: Uncategorized

Calling All Niagara Area Nursery Growers – meeting October 30th

                           2016 is the year we remember as being unusually dry across much of Niagara Region. The dry conditions highlighted the need for access to irrigation water and … Continue reading

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Gearing Up for Fall Dormant Oil

  Many horticultural professionals are gearing up for fall applications of horticultural oil. But the warm weather is causing trees to retain foliage later than they usually would, delaying dormant applications of horticultural oil.  The full, dormant rate of horticultural oil … Continue reading

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Boxwood Leafminer Adults Abound!

Boxwoods in the landscape not looking so good coming out of the winter?  Are you seeing a lot of yellow leaves? Can you see any yellow-green-brown spots?

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Managing Spring Pests on Evergreens

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

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Protect Rosaceous Hosts Now From Juniper Rusts

Gymnosporangium rusts are sporulating now on Juniperus hosts.  Look for orange, gelatinous structures on foliage and stems of various Juniperus spp.  They are sporulating both in container production and in the field.  They can usually be found sporulating when the … Continue reading

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Protect Malus and Pyrus Now

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 Malus Against 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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