Category: Insects, Diseases & Other Problems

Oystershell Scale-Resistant Hedging Alternatives

Posted by shane - January 3, 2017 - A-Z Plant Maintenance, Hedges, Insect Pests

Oystershell scale continues to devastate Calgary hedges, and we treated a record number of them in 2016.  This trend is likely to continue.  It is getting to the point that keeping a cotoneaster healthy in Calgary might not be worth the money or effort for many people.  I’ve been telling my customers that I would […]

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New Service: Japanese Knotweed Control

Posted by shane - July 5, 2015 - Weeds

We are pleased to announce that we will be controlling Japanese knotweed in the Calgary and Red Deer areas using stem injection technology.  If you have this serious weedy pest, DO NOT attempt to dig the plant as this will result in many, many more plants. Knotweed must be destroyed with herbicide, preferably injections into […]

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Hawthorn-juniper Rust

Posted by shane - January 6, 2015 - Diseases

This is a very common disease of hawthorns and juniper shrubs.  The disease requires two hosts to complete its life cycle, and the symptoms look very different on the two host species.  In the spring, the hawthorn leaves emerge and appear healthy.  Soon after flowering, the rust spots start appearing on the leaves and the […]

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Repairing Snow-Damaged Cedars

Posted by shane - December 23, 2014 - Environmental Disorders, Pruning Techniques

After a winter of heavy snowfall, cedars can be unsightly in the spring.  Don’t despair, they can be repaired. The example in the picture is in south Edmonton.  The snow loaded down the branches on this shrub so much that the owners had a hard time getting in and out of their front door. The […]

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Why is the Top of My Birch Tree Dead?

Posted by shane - December 15, 2014 - Insect Pests, Insects, Diseases & Other Problems

All over Red Deer and other Alberta towns and cities, the big mature birch trees are dying.  Why? There are a number of factors that contribute to the decline of a weeping or paper birch.  First, the majority of our soils in the Red Deer area are clay-based, alkaline grassland soils, which are not particularly well […]

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Why is My Old Mountain Ash Tree Falling Apart?

Posted by shane - November 12, 2013 - Insects, Diseases & Other Problems, Pruning Techniques

I just moved into a 1950’s neighbourhood in Red Deer and the only tree in my yard is an old American mountain ash (Sorbus americana).  It, like many or most mountain ash of the same age, is decayed, has very poor structure, and without considerable help, will self-destruct within a few years, or perhaps in […]

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I Can’t Grow Grass Under My Spruce Tree!

Posted by shane - July 3, 2011 - Environmental Disorders, Insects, Diseases & Other Problems, Weeds

No kidding!  You know, this is one of the top 5 comments I hear all year, from various would-be clients.  It seems that most people have at least one big spruce tree in their yard, and more often than not, people try to do the impossible.  They attempt to grow beautiful Kentucky bluegrass under the […]

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Oystershell Scale

Posted by shane - February 6, 2011 - Insect Pests, Insects, Diseases & Other Problems

Of all the pests that I work with in Calgary and Red Deer, the scale insects are doing the most damage.  And while European Elm Scale is now familiar to homeowners and tree professionals, oystershell scale is still largely unknown to people, and its potential for damage grossly underestimated by arborists, landscapers, and government bodies.  It attacks […]

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Cottony Ash Psyllid

Posted by shane - January 31, 2011 - Insect Pests, Insects, Diseases & Other Problems

For information on the biology and control of this pest, please refer to the following link to the City of Red Deer Fact Sheet: Red Deer Experience This pest has been tough to control.  Most Black and Manchurian Ash in Red Deer in 2009 were in decline or nearly dead.  In 2010, likely due to a […]

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Birch Leafminer

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

This is a very common pest in the urban landscape in some areas.  In the summer of 2009, there was a serious epidemic in some Red Deer neighbourhoods, but populations declined greatly in 2010, most likely due to a cold, wet spring, and generally cool summer.  As of 2016, leafminer has become an increasing problem […]

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