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 Tag: Beech Bark Disease 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 introduced...
Butternut Canker Ophiognomonia clavigignenti-juglandacearum Home 9 Invaders 9 Category: Forest Pests & Pathogens ( Page 2 ) Background Butternut canker is a fungus that infects and kills healthy butternut trees (Juglans cinerea) of any size or...
Dutch Elm Disease Ophiostoma ulmi Home 9 Category: Invaders ( Page 7 ) Background Dutch elm disease is caused by a fungus (Ophiostoma ulmi) that has been killing native elm trees in North America. The disease is spread by both a native elm bark beetle...
Oak Wilt Bretziella fagacearum Home 9 Invaders 9 Category: Forest Pests & Pathogens ( Page 2 ) Background Oak wilt is a fungal pathogen (Bretziella fagacearum) killing thousands of oak trees in North American forests and woodlands each year. The...
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