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urban forestsEmerald Ash Borer Information

The Emerald Ash Borer (EAB), an invasive insect from Asia, is moving into Midland and surrounding areas.  EAB larvae eat the soft wood under the tree’s bark, preventing the tree from moving water and nutrients between its roots and leaves, and killing it within one to three years.  EAB has killed tens of millions of ash trees in southern Ontario and the United States since its discovery in 2002.
Ash trees that are still healthy and structurally sound can be saved if residents choose to treat them. If you have an Ash tree on your property, it is important to take action.  Signs of EAB usually only become apparent once a tree is heavily infested, at which point treatment becomes much less effective.  Urban forestry professionals expect ash trees to decline in larger numbers than in previous years and advise that the summer of 2014 may be the last opportunity to begin an effective treatment program. Treatment can take place only between June and August 31.

If you have an ash tree, you have two options:
  1. Begin a treatment program with your Ash tree(s). Treatment programs can only be undertaken by licensed treatment technicians.  
  2. Check with your local nursery or arborist for a list of licensed treatment technicians in your area. Remove and replace your Ash tree(s) with a different species.
Should you chose to remove your Ash tree, it is strongly recommended to chip all the wood to eliminate the chance the EAB will survive and transfer the harmful larvae to other trees.  To prevent the spread of the EAB, Ash wood should not be transported out of the community.
For more information on the Emerald Ash Borer, visit www.invasiveinsects.ca

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