Category: Insects, Diseases & Other Problems

Fire Blight

Posted by shane - January 25, 2011 - Diseases, Insects, Diseases & Other Problems

Fire blight is very common on the Prairies.  Some years are worse than others.  In Calgary and Red Deer, in 2009, it was particularly severe.  Epidemics occur during warm, humid weather, with relative humidity above 60%.  The bacteria responsible for the disease can multiply at temperatures between 15-32C, but do so most readily between 27-29C.  Outbreaks can follow severe storms, […]

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Black Knot Fungus

Posted by shane - January 25, 2011 - Diseases, Insects, Diseases & Other Problems

 Black knot is one of the most commonly encountered diseases among ornamental plantings.  I see it most often on mayday and ‘Schubert’ chokecherry trees.  Besides poor planting techniques and poor plant quality, black knot is the most common cause of plant death among those species. Easily recognizable, black knot starts as swellings on the twigs in […]

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Leaves Turning Yellow in Summer? You Might Have Iron Chlorosis

Posted by shane - July 25, 2010 - Environmental Disorders, Insects, Diseases & Other Problems Read More

Scale Insects Invade Calgary Communities

Posted by shane - July 16, 2010 - Insect Pests, Insects, Diseases & Other Problems

Scale Insects Invade Calgary Communities

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