Ash Tree Removal Results in Temporary Trail Closures at Rattray Marsh

Thursday, May 21, 2015 by Credit Valley Conservation

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Credit Valley Conservation (CVC) is removing ash trees at Rattray Marsh Conservation Area due to the invasive forest pest, emerald ash borer (EAB). Selected trails and trail sections will be temporarily closed to ensure visitor safety. This is mainly around Green Glade Senior Public School and the Silver Birch Trail entrance to the conservation area. Visitors must obey all posted trail closure signage.

CVC staff have been working since fall of 2014, removing ash trees that are infested, cannot be saved and pose a hazard to people on trails and private property. CVC staff identified a number of ash trees that have declined significantly and require immediate removal.

Rattray Ash Trail Closure Points

“Our primary concern is the safety of conservation area visitors,” said Shawn Verge, Operations Manager, South Zone for CVC. “EAB affects an ash tree’s root structure, making infested trees unstable at the base. Significantly degraded trees need to be removed as soon as possible.”

The emerald ash borer (EAB) is an invasive forest pest, not native to North America. EAB infest and kill 99.9 per cent of all ash trees they come in contact with. EAB larvae (young) feed just beneath the bark of ash trees and disrupt the movement of water and nutrients. This pest continues to spread north through Ontario by flying from ash tree to ash tree. Rapid spread is caused by transporting firewood, logs and trees from nurseries. EAB are particularly interested in Rattray Marsh. Almost 80 per cent of its forest cover is made up of ash.

CVC held a community meeting on May 5, 2015 at Green Glade Senior Public School to consult with local residents on ash tree management at the conservation area. Residents provided valuable input into the ash tree management process. As management activities progress, CVC will continue to reach out to local residents with updates and to involve them in the process.

“In the months and years following ash tree management, we’ll plant new trees to help the conservation area recover and we want the community to be part of that process,” said Verge.

CVC is calling on everyone who visits Rattray Marsh to donate today to help preserve the beautiful forests at Rattray Marsh Conservation Area for years to come. Your donations will be used to inoculate healthy ash trees and plant new trees for the future. Visit and click the link that says ‘save our ash’ to donate today.

For more information contact CVC’s Jon MacMull at (905) 670-1615 ext. 385 or

Conservation authorities are a provincial/ municipal partnership. For 60 years, Credit Valley Conservation (CVC) has worked with its partners, municipalities and stakeholders to support a thriving environment that protects, connects and sustains us. CVC gratefully acknowledges financial support from our member municipalities for facilities, programs and services: the Regions of Halton and Peel; the Cities of Mississauga and Brampton; the Towns of Caledon, Erin, Halton Hills, Mono, Oakville and Orangeville; and the Townships of Amaranth and East Garafraxa. CVC is a member of Conservation Ontario.

Emerald Ash Borer (EAB)


Media Contact
Jon MacMull
Supervisor, Marketing & Communications
Credit Valley Conservation
905-670-1615 ext. 385

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