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Your resource for information on invasive insects, plants and pathogens that threaten 
Canada’s forests




A special message to our partners in response to COVID-19:

We are open for business and remain available to assist you. Invasive Species Centre staff are
working remotely at this time to reduce risk and you can continue to contact our team by email.
You can also call 705-541-5790 or email if you need to connect
with us for any reason.

What's New?



This workshop has been developed for foresters, arborists, municipal workers, and other professionals who are looking to learn more about the identification and management of this incoming forest threat!

ISA Certified arborists and foresters can obtain CEUs for attendance at this event.

Register today!




This spring, we’re on the lookout for two priority forest pests; hemlock woolly adelgid and oak wilt! Hemlock woolly adelgid (HWA) is native to Asia, and was first detected in eastern North America in the 1950’s. This invader attacks native hemlock species, which are commonly found in Ontario forests and urban spaces.  

Look for white, cotton-like or woolly masses forming on the base of hemlock needles.  

To learn more about the hemlock woolly adelgid, visit the species profile. 


Oak wilt is a vascular disease of oak trees caused by the fungus Bretziella fagacearum. The fungus grows on the outer sapwood of oak trees restricting the flow of water and nutrients through the tree. Oak wilt has spread throughout the Eastern United States. In 2016, it was confirmed on Belle Isle in Michigan, in the middle of the Detroit River, 579 metres from the shores of Windsor, Ontario. Visit the species profile to learn more about oak wilt.


If you see signs and symptoms of either of these forest pests in Ontario, please report the sighting to the CFIA or EDDMapS Ontario. 

Want to stay informed on the latest forest invasive species news?
Check out our news room for the latest headlines!

New Exhibit Unveiled at the Bushplane Heritage Centre

Invasive Species Centre staff joined the Rural Agri-Innovation Network (RAIN) at the Bushplane Heritage Centre in Sault Ste. Marie on Thursday, December 6 to unveil an addition to the new Ecology and Environment Corner at the centre. This new exhibit, developed by RAIN and its partners, features the cultural and economic aspects of maple syrup production in Canada. Not only does maple syrup hold a special place in every Canadian’s heart, but with over $380 million in exports last year, it has its own spot in Canada’s pocketbook as well. Though not established in Canada, the Asian longhorned beetle is an invasive species that attacks and kills hardwood trees, including maples. Invasion of this invasive species into Canada would be of great detriment to our beloved maple syrup industry and would come with severe economic impacts. At the exhibit opening, the ISC staff discussed the risk of Asian longhorned beetle infestations with guests and the steps they can take to prevent an invasion. This exhibit will support the Bushplane Heritage Centre’s vision of becoming Sault Ste. Marie’s science centre through the addition of exhibits exploring different fields of study. The Invasive Species Centre will have their own exhibit coming to the Bushplane Heritage Centre in 2019 where visitors can learn about other invasive species found in Canada.

You can find out more about preventing the spread of Asian longhorned beetle and other forest invasive species HERE

You can also read more about Asian longhorned beetle and its effects on the maple syrup industry in the most recent Invasive Species Centre newsletter!

ISC Policy & Program Intern, Mackenzie DiGasparro, representing the 
Forest Invasives program at the Bushplane Museum Maple Syrup Exhibit Reveal.

  ISC Business Development & Communications Manager, Deb Sparks, providing
remarks at the Bushplane Museum Maple Syrup Exhibit Reveal in Sault Ste. Marie, Ontario

2018 Invasive Species Social 

Following the Invasive Species Forum on November 21st, the Invasive Species Centre hosted an Invasive Species Social at Science North in Sudbury, Ontario. This event recognized the Ontario Trillium Foundation for their funding in support of the Early Detection and Rapid Response Network and included an Asian Carp Canada public information session. The event hosted booths from partners including the Ontario Invasive Plant Council, the Invading Species Awareness Program, Junction Creek Stewardship Committee, and Fisheries and Oceans Canada. The Invasive Species Centre also showcased the Forest Invasives program, along with its other programs Asian Carp Canada and the Early Detection and Rapid Response Network.

Representatives at the Ontario Trillium Foundation recognition event. Left to right: Lauren Bell, Invasive Species Centre Community Outreach & Education Coordinator; Tracey Cooke, ISC Executive Director;Al Sizer, Deputy Mayor of Sudbury; Gabby Nichols, Ontario Invasive Plant Council EDRR Coordinator.

ISC Patrnership and Science Manager, David Nisbet
representing the Forest Invasives program, interacting with guests at the Invasive Species Social event.

2018 Forest Health Review

The 42nd Annual Ontario Forest Health Review took place at the Great Lakes Forestry Centre in Sault Ste Marie this year. This annual meeting put on by the Ontario Ministry of Natural Resources and Forestry and the Canadian Forest Service provided an update on the current status of forests in Ontario for forest resource managers, foresters, ecologists, conservation authorities, pest management companies, academics, municipalities, and others interested in forest resource management. Representatives presented the latest information on forest health conditions, forest invasive pests, current and upcoming forest management programs, and the year's research results.

View the speaker presentations here

Don't let invasives ruin your garden!

Try planting these and other native species instead! They look great, and they don't threaten Ontario's biodiversity. For more info on what plants are good for your garden check out these Grow Me Instead guides.


Asian Longhorned Beetle Mountain Pine Beetle Mountain Pine Beetle Image Map Emerald Ash Borer Hemlock Woolly Adelgid


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