Category Archives: Plant /Tree Pest Control

Update: Emerald Ash Borer

I am reposting this from Spring 2012.  As the snow melts and the damage from these bettles on our Ash trees is remarkable.  Trees that were showing signs of crown dieback and some woodpecker damage, last year at this time, are now standing stone dead.  The larva of these beetles have been feeding under the…

Preventing Winter Damage to Rhododendrons and other Broad Leaf Evergreens

The recent deep freeze in Connecticut reminded me of the importance of protecting the evergreens that many of us rely on to dress up our foundations and use as winter interest in garden beds.  Although, these plants are masters at acclimating to our winters by entering dormancy, very low temperatures are damaging to leaves and…

Proper Tree Mulching

Mulching your landscape, for many, is an annual event to dress up your landscape for the new growing season.  It is a spring cleaning of sorts.  Whether you apply it yourself or hire a company, there is a right way and a wrong way to mulch your trees.  Aside from the aesthetic reasons to mulch,…

There is a Sea Anemone growing out of my Cedar Tree, Help!

 No, silly, that is not a sea anemone, it’s a pathogen called Gymnosproangium juniperi-virginianae.  “A what?” you say.  It is cool to look at, but it is evidence of Cedar-Apple Rust.  It is the best known and most common of all the gymnosporangium rusts.  This is dangerous in areas where apple trees are abundant because…

Dutch Elm Disease Prevention

Elm trees are popular and can be majestic.  If you have an old one you love, Dutch Elm Disease can be scary.  This disease is caused by a fungus called Ceratocysis ulmi which entered North America in Elm wood coming from Europe before 1930.  It has spread over most areas where Elms grow today.  Infection…

What is a Dormant (horticultural) Oil?

What is dormant oil and how does it work? This is a very common question from our customers this time of year. The Northeastern Regional Pesticide Coordinators core manual defines it as, “a ‘horticultural’ application made before trees and other plant life begin to leaf out in the spring.” Applied during dormancy it helps prevent…

Seasons Greetings 2012

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Recognizing Ornamental Tree Scale Infestation

From a distance, a white powdery scale infestation on your tree bark may look like a harmless lichen or tree fungus. Upon closer examination, you may see the nymph stage (crawlers) in the white egg masses noted in the picture of an infected Kwanzan Cherry Tree. Left untreated, these insects feed on the tree and…

Hemlock Health Care

It’s that time of year. The Woolly Adelgid nymphs that appeared on your Hemlocks in July are beginning to feed to get ready to overwinter. This feeding can cause tree growth to slow down. The needles will start to discolor and drop off. The “woolly” in the name describes the eggs sacks that are found on…

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