Category Archives: Diseases

REMOVE & DESTROY Cankered-Looking Deadwood

Posted on April 7, 2016 by Jen Llewellyn

                                                   While woody plants are still dormant and bark is very visible, its a great time … Continue reading →

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Is it Needlecast Disease….or something else?

Posted on April 4, 2016 by Jen Llewellyn

We’ve seen a fair amount of dieback on spruce trees in the nursery and landscape over the last few years.  It all seemed to start back in the fall of 2013, just after that wicked hot summer where some areas … Continue reading →

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Oak Leaves are Dropping…..

Posted on July 14, 2015 by Jen Llewellyn

  So I’ve been getting some calls about leaves turning yellow and dropping from mature oak trees in the landscape.  There are quite a few things that can cause established deciduous trees to undergo premature leaf drop.  

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June 8 – Do You Know Where Your Bugs Are?

Posted on June 8, 2015 by Jen Llewellyn

It’s official, climatologists are calling for a cooler summer with above average precipitation for the Great Lakes Region, that means us.  Weather phenomena are conspiring to make this a wetter and potentially cooler season for us.  This means exceptional transplant … Continue reading →

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The Friday Report

Posted on May 29, 2015 by Jen Llewellyn

Holy Cow its dry out there, lawns look like they are starting to go dormant.  Newly planted trees and shrubs are really starting to suffer. I’ve got American goldfinches trying to drink from my Hummingbird feeder.  And my colleague said … Continue reading →

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Up and Down in Southern Ontario

Posted on May 21, 2015 by Jen Llewellyn

It’s our favorite time of year, the temperatures are up and down like a yo-yo, the UV index is extremely high, the black flies are still biting (me at least) and a new batch of mosquitoes has just hatched (and … Continue reading →

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Protect Evergreens Now, New Growth is Emerging

Posted on May 15, 2015 by Jen Llewellyn

Monitor for needlecast and blight diseases on older foliage where new foliage is emerging on pine and spruce.  

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Continue to Protect Against Fireblight and Apple Scab

Posted on May 13, 2015 by Jen Llewellyn

Now is the time that Fireblight (apple, pear, see above) and Apple Scab (apple) diseases are spreading to new, emerging growth in the nursery.  

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EVERGREENS: Winter Desiccation or a Pest Issue?

Posted on May 5, 2015 by Jen Llewellyn

I had a request for an article on diagnosing winter desiccation versus pest and disease issues on evergreens.  I find diagnosing diseases of evergreens versus physiological and abiotic disorders to be tricky.  But here is the decision-making process that I … Continue reading →

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Flower Buds and a Few Thugs

Posted on April 24, 2015 by Jen Llewellyn

We’ve had such a cool spring that when we did start to get some “heat” a few weeks ago, it hastened the development of some of our earliest flowering plants.  Instead of there being distinct periods of bloom, many of … Continue reading →

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