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Fall Needle Shed

Causes of Needle Browning & Needle Shed Yellowing and browning of needles in the fall is a normal occurrence on pine, spruce, cedar and juniper. The discolouration, which affects the older needles closer to the trunk, can begin in early August and continue until freeze up. Needle drop can occur in the fall or over…

Dieback of Birch

Keep Your Birch Trees Watered & Healthy Birch dieback is usually caused by a lack of water. In their native habitat, birch grow in moist locations, usually near lakes and streams – conditions not found in most yards. Damage Sparse foliage and dead branches at the tops of birch trees are a common sight. The…

Plant Problems

Injuries, Nutrient Deficiencies & More Sometimes your trees and shrubs will experience noticeable problems for reasons that are not immediately apparent, and are not due to insects or disease. At ArborCare Tree Service, serving clients across Western Canada, we have the experience necessary to help keep your plants healthy. Whether your birch is suffering from…

Septoria Canker

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…

Fireblight

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,…

Juniper-Hawthorn Rust

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…

Dutch Elm Disease

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…

Cytospora

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…

Bronze Leaf Disease

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

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…

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