Forest Health Update from the Township of the Archipelago

The Township of the Archipelago’s (ToA) website has a page devoted to Forest Health in the Archipelago.  Please read full reports at Township of the Archipelago .  The following is an excerpt: 

"There are concerns over a range of invasive forest pests threatening our local forests including the emerald ash borer, Asian long-horned beetle, beech bark disease, and hemlock wooly adelgid. This webpage provides an overview of the trees, forest regions, and forest pests in the Parry Sound-Muskoka area, as well as pests that might arrive in the near future. Where possible, control measures and references (for further reading) have also been provided. Since many of these pests arrive from southern Ontario, and some are at risk of spreading north from this region, the best practice for residents and cottagers is to not bring/move firewood, skids, and wood products."


Common Forest Concerns Present in and near the South Channel

The following pests are known to occur in the Parry Sound-Muskoka area based on confirmed reportings.

Beech Bark Disease(BBD)

  • Identification:  Adult beech scale are small, oval insects 1 mm long. Fungus is red, appears in circular or lemon-shaped cankers
  • Distribution: Extensive damage in Killbear Provincial Park and Wasauksing First Nation
  • Best Practices & Controls: Clear cut beech trees, if trees pose a hazard to people, animals or property.     

Forest Tent Caterpillar(FTC)

  • Identification: Larvae: black, hairy, about 3 mm long      In the past, outbreaks typically occurred on a 10 year cycle.     
  • Best Practices & Controls: Prune egg-bands off twigs from August to just before egg hatch in early May 

Fall Webworm

  • Identification: Larvae: head usually black, cream-coloured body with rows of black or orange bumps with groups of stiff, white hairs extending out of them, some hairs quite long   
  • Distribution: Often seen starting in August in the Georgian Bay area
  • Best practices & controls: Although fall webworm is not aesthetically pleasing, and the infested trees look to be in poor health, it is highly unlikely that healthy trees are killed.          

Hemlock Looper

  • Identification: Larvae: dark, mottled, gray when young, various colours varying from yellow to black when mature, full grown 30 mm long.       
  • Distribution: In 2002, it was found in Five Mile Narrows area, in Menominee Channel area.   Be watchful in case the Muskoka situation signifies a rise in looper populations in Parry Sound District.
  • Best practices & controls:  use high pressure hose to knock off larvae, spray with BTK insecticide 

Pine Shoot Beetle

  • Identification: Adult: 3-5 mm long, black or dark brown in colour, cylindrical in shape
  • Distribution: Pine shoot beetle and pine cone beetle have affected white pine and red pine for several years along Georgian Bay   
  • Best practices & controls: Water special trees during drought by drilling small holes in a large plastic barrel and place next to tree.      

Red Pine Cone Beetle   

  • Identification: The adult beetles are black, cylindrical and about 3mm long        
  • Distribution: Seen in the Archipelago, damage from the red pine cone beetle often goes unnoticed.             
  • Best practices & controls: Water special trees during drought by drilling small holes in a large plastic barrel and place next to tree.     

‚ÄčEastern Hemlock - Click here to find out more.


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