Emerald Ash Borer Agrilus planipennis Home 9 Invaders 9 Category: Forest Pests & Pathogens Background Emerald ash borer is a forest pest native to Asia that has killed millions of Ash trees in southwestern Ontario, and the Great Lakes States....
Spongy Moth Lymantria dispar Home 9 Invaders 9 Category: Forest Pests & Pathogens Background Spongy moth is an insect native to Europe and Asia that has been severely weakening trees across North America. Spongy moth was introduced to North...
Invasive Earthworms Home 9 Tag: Invasive Earthworms Background Native earthworms from Canada were removed by the last glaciers and of the 19 species confirmed in Ontario, 17 originate from Europe and 2 from the United States. Since the retreat of the...
Mountain Pine Beetle Dendroctonus ponderosae Home 9 Tag: Mountain Pine Beetle What is Ontario Doing? To prevent this unwanted invader from coming into the province, Ontario has regulated mountain pine beetle as prohibited under the Invasive Species Act,...
Beech Bark Disease Neonectria faginata Home 9 2021 9 March ( Page 11 ) Background Beech bark disease is a new threat affecting beech (Fagus grandifolia) trees in Canada’s hardwood and mixed forests. This disease is caused by a combination of an...
Butternut Canker Ophiognomonia clavigignenti-juglandacearum Home 9 2021 9 March ( Page 11 ) Background Butternut canker is a fungus that infects and kills healthy butternut trees (Juglans cinerea) of any size or age. We don’t know where the disease...
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