IPM This Week August 17/17

MagnoliaScaleJuly28Magnolia Scale has had another great year in the Ontario landscape. This means tons of honeydew, ants, wasps and other nuisance insects that plague our beloved magnolia trees.  Continue reading

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The Tuesday Report – July 25

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MalusJulyWhatHappened                        Um what happened to our crabapple trees?  You know what happened, all that rain during leaf emergence made things pretty cozy for fungal and bacterial diseases.  Crabapples tend to lose their leaves when they get infected with diseases like apple scab.  Compartmentalization is a pretty common survival strategy in the plant world.  But in the human world, it’s the thing that gets men in trouble 🙂

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Now Is The Time To Test Leaves for Nutritional Content

_DSC7446                          Ever see chlorotic or stunted leaves and wonder if it could be a particular nutrient deficiency?  Soil nutrient testing can be a good tool to assess levels of macro and micronutrients.  We use soil tests to help make decisions about adding fertilizer and organic materials to the soil.  But what soil tests don’t tell you is Continue reading

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Time To Prune Boxwood and Eastern White Cedar

BoxLeafMinerDamageApril              Remember all those yellow spots on boxwood leaves we had this spring?  These were the feeding sites of the overwintering larvae of boxwood leafminer (Monarthropalpus buxi, M. flavus). Continue reading

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IPM This Week – July 11

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BlumeriellaOnPrunus                      Frequent precipitation events continue to shower outdoor ornamentals with too much love.  Leaf diseases are rampant, making plants look scraggly in some areas with prolonged leaf wetness periods.  The second flush of growth on woody plants is looking better than the first, but still.  Prunus species (cherry) are showing obvious shot hole leafspot caused by the fungus Blumeriella jaapii (above photo, Melissa Huntley).   Continue reading

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Hay Hay We’re the……Scarab Beetles!

<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 building in numbers in southwestern Ontario this week.  Continue reading

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Pesky Pests Running Among Us

GypsyMothLarvaHideAfternoonYellowHeadJune19_17_01 Gypsy moth larvae are donning their yellow heads…..which means they are no longer susceptible to the biocontrol Bacillus thuringiensis (B.t./Dipel/Foray).  Success naturalyte insecticide can be used to Continue reading

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