Insect and Disease

larve on needles

Spruce Budworm

The spruce budworm  (Choristoneura fumiferana) is a native moth and one of the most serious and damaging spruce and fir trees defoliator in North America. It primarily attacks spruces ( white, black Colorado)  and balsam fir trees in Alberta. It is a wasteful feeder on current year needles.   White spruce is naturally established on 9

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black know, swelled branch

Black Knot -Avoid Mistakes

Black knot (Dibotryon morbosum) is a prevalent disease in the Canadian prairies, naturally occurring and predominantly affecting trees and shrubs within the Cherry (Prunus) genus. Various species, including ornamental and edible cherries (such as Maydays, Schubert chokecherry, chokecherry, Nanking cherry, pin cherry, sand cherry, sour cherry, etc.), Saskatoon’s,  and plums are susceptible to this disease.

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adult poplar borer

Poplar borer – wood boring beetle that attack Swedish Aspen and Towering Poplar

Poplar borer (Saperda calcarata Say) is a native North American wood boring beetle that attack native aspen, balsam poplar and willows. Poplar borer beetle also attack a variety of poplar cultivars including Swedish aspen and Towering Poplar. It is one of the most common insect for Swedish aspen and Towering poplar in urban area. Many

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