Forest Archives – Invasive Species Centre

Oak Wilt Economic Case Study

invasivespeciescentre — Wed, 15 Jul 2026 20:20:47 +0000

What is Oak Wilt? Oak wilt is a vascular disease of oak trees (Quercus spp.) that is caused by the invasive fungal pathogen Bretziella fagacearum. The fungus grows on the outer sapwood of oak trees, stimulating the host’s defense mechanisms which restricts the flow Continue Reading

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Timely, coordinated response, key in successful eradication of Asian longhorned beetle.

invasivespeciescentre — Thu, 04 Jun 2026 20:20:35 +0000

A Near Miss: How rapid response and coordinated efforts ensured effective eradication of Asian longhorned beetle in Ontario Written by: Adam Gouge, Invasive Species Centre Asian longhorned beetle (ALB) (Anoplophora glabripennis), is a species of voracious tree feeding insect native Continue Reading

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Protect lands and waters in Ontario: Apply to the 2026/27 Invasive Species Action Fund

invasivespeciescentre — Wed, 29 Oct 2025 15:13:11 +0000

Thanks to an investment from the Ontario Ministry of Natural Resources, the Invasive Species Centre is accepting proposals to the Invasive Species Action Fund (ISAF) to facilitate on-the-ground monitoring and management of critical invasive species in Ontario. Municipalities, conservation authorities, Continue Reading

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Invasive Species Spotlight: Japanese Stiltgrass

invasivespeciescentre — Thu, 09 Oct 2025 18:22:32 +0000

September 9, 2025 What is Japanese Stiltgrass? Japanese stiltgrass (Microstegium vimineum) is an invasive annual grass (Poaceae) that thrives in a wide range of habitats including forests, wetlands, lawns, trails, and roadways. It often forms dense, monospecific stands that outcompete Continue Reading

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Protect oak trees: no pruning until November

invasivespeciescentre — Thu, 10 Apr 2025 20:34:55 +0000

April 10, 2025 Ontario residents are urged to refrain from pruning oak trees during the no-pruning season, which runs from now until November. Pruning or otherwise damaging oak trees during this time makes them especially vulnerable to oak wilt disease. Continue Reading

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Invasive Species Centre Launches Project to Help Protect Ash Species in Ontario

invasivespeciescentre — Wed, 19 Mar 2025 17:50:27 +0000

March 19, 2025 The Invasive Species Centre is excited to announce the launch of a new, three-year initiative in partnership with the National Tree Seed Centre, Forest Gene Conservation Association, and the Ontario Forestry Research Institute with funding and support Continue Reading

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What You Need to Know About Egg Masses

invasivespeciescentre — Fri, 10 Jan 2025 21:44:47 +0000

January 10, 2025 What is an Egg Mass? Egg masses are a protective structure around insect eggs that can come in many different varieties to protect the eggs from weather or predation. Some egg masses, like a spongy moth egg Continue Reading

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Spread joy, not pests: invasive species could be hiding in your holiday decor

invasivespeciescentre — Fri, 06 Dec 2024 19:10:56 +0000

December 6, 2024 As the holiday season approaches, the Invasive Species Centre is urging the public to check their holiday decorations for invasive species. Christmas trees, wreaths, and other natural decor can have invasive insects, eggs, and plants that pose Continue Reading

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Invasive Species Action Fund supports local community groups for on-the-ground action in Ontario

invasivespeciescentre — Thu, 04 Jul 2024 14:27:26 +0000

Thanks to an investment from the Ontario Ministry of Natural Resources, the Invasive Species Centre is supporting 97 new collaborative action projects by community groups, Indigenous organizations, and municipalities on critical invasive species issues. This includes projects with Anishinabek Nation, Continue Reading

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Ontario Protecting Environment from Harmful Invasive Species

invasivespeciescentre — Thu, 20 Jun 2024 15:00:26 +0000

Posted June 20, 2024 | Media release from the Ontario Ministry of Natural Resources $16 million investment will help communities better manage this growing threat YORK REGION —The Ontario government is investing $16 million over three years to protect the Continue Reading

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