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 Invaders 9 Category: Forest Pests & Pathogens 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...
Mountain Pine Beetle Dendroctonus ponderosae Home 9 Invaders 9 Category: Forest Pests & Pathogens What is Ontario Doing? To prevent this unwanted invader from coming into the province, Ontario has regulated mountain pine beetle as...
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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