Posted on: May 10, 2017

Soil Treatments to Protect Ash Trees

Because Emerald ash borer was found in Stevens Point last year, City Forestry personnel are treating a number of ash trees in the downtown area. A contractor will also be treating 550 ash street trees in the rights-of-way throughout town soon.

The City encourages residents who have ash trees which they would like to protect on their private property to begin looking into having the trees treated.

Residents who have a tree smaller than about twelve inches in diameter can successfully treat their own tree with products bought at home and garden centers. Products such as Ortho Bug B Gone Year-Long Tree and Shrub Insect Control, or Bayer Advanced Tree and Shrub Protection are examples of insecticides labeled to control EAB. The key active ingredient is imidicloprid. Residents are encouraged to follow the directions.  

See a Demonstration Video

Residents who have an ash tree larger than twelve inches in diameter should contact an arborist to have their ash tree treated, because insecticides that are effective in protecting larger ash trees require special training and certification to apply.  It is advised to get a couple of estimates.

Ash trees left untreated in Stevens Point will be infested to some degree within five years, and will begin to die off in large numbers within ten years.  

Ash Tree Soil Injection
Read More about EAB
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City of Wonderful Water
City of Stevens Point, 1515 Strongs Ave., Stevens Point, WI 54481 | Phone 715-346-1569