Recognize Canker Spots in Your Trees Septoria canker is a fungal leaf spot disease of poplars and willows. There are several different species and forms of this disease. All produce typical brownish or black spots on leaf surfaces, malformed leaves, and can cause early defoliation. In more susceptible species, conspicuous overwintering cankers are formed, which…

How to Recognize Blight in Your Trees Fireblight is a destructive disease that attacks more than 75 different species of plants, all of which are in the Rosaceae family. In Alberta, fireblight is common on: apple, crabapple, pear, mountain ash, hawthorn, Saskatoon, cotoneaster, raspberry, plum, mayday and spirea. Because this is a very infectious disease,…

Defend Juniper from Fungal Attacks Plant diseases show their faces in a variety of ways, some stranger than others. Perhaps you’ve noticed orange jelly-like balls on juniper branches in the spring of the year. Consider the disease, juniper-hawthorn rust, also known as cedar-apple rust. The fungus that causes this disease will produce orange jelly-like balls…

Preserve Your Elms & Keep Them Healthy Dutch Elm disease (DED) was first introduced to North America from Europe in 1930, since then it has destroyed millions of American Elm trees across North America. The causative agent of DED is a fungus, Ophiostoma ulmi or Ophiostoma nova. Fungal spores are spread from one elm tree…

Combat Pathogens that Attack Your Trees Cytospora canker is caused by various species of the fungus Cytospora. These pathogens affect many species of trees and shrubs, including aspen, cottonwood and other poplars, apple, birch, willow, mountain ash, silver maple, spruce and Siberian elm. Some Cytospora species are host specific and will not spread to other…

Protect Your Poplars from Fungal Attacks Bronze leaf disease (BLD) is a fungus that infects various poplar species and hybrids; specifically trembling aspen, Swedish columnar aspen and tower poplar. BLD is relatively new to Calgary and can kill an infected tree within three to five years of initial infection. Early detection and treatment is important.…

Black Knot Disease  How to Recognize an Infestation in Your Trees? Anyone who has fruit trees in Alberta knows that they can be prone to disease unless carefully monitored and treated. One disease common to our area is black knot fungus. Take time to learn the facts about this tree disease so you can keep…

Tree Disease Treatment in Calgary, Edmonton, Kelowna & All Western Canada Fight Off Fungal Diseases & More ArborCare Tree Service takes the threat of disease very seriously. We provide extensive Tree Disease Treatment to clients across Western Canada, including Calgary, Edmonton, and Kelowna. If your trees or shrubs are exhibiting signs of sickness, blight or…

Insect and Disease Control in Calgary, Edmonton, Kelowna & All Western Canada We’ll Help Protect Your Trees & Shrubs ArborCare offers extensive Insect and Disease Control programs in Calgary, Edmonton, Kelowna, Kelowna & All of Western Canada. A common ArborCare Plant Management (APM) recommendation is for 3 foliage spray and wash applications per year. Using an…

There’s a saying that goes, “The best time to plant a tree is twenty years ago. The second best time is now.” We plant trees for a number of reasons. We want to mitigate the effects greenhouse gases have on the environment. We want fresh fruit. We want to enhance the beauty and value of…