Ontario has the largest number of invasive species in Canada. Here are some to look out for

As spring arrives and more people tend to their gardens, Ontarians may begin to notice more non-native creatures and plants.

“Ontario has the largest number of invasive species in Canada — more than 180 aquatic invasive species, at least 39 forest insects, 10 tree diseases, and around 500 non-native plants, with more added every year,” said Karen McDonald, the Toronto and Region Conservation Authority’s senior manager of restoration and infrastructure.

Hammerhead worm

Hammerhead flatworms, whose scientific name is Bipalium Adventitium, are seen in an undated handout photo. 

oak wilt

White, grey, or black fungus can be a sign of oak wilt.

phragmites

Phragmites reeds growing by Sonia’s Ontario pond.

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