Emerald Ash Borer

Every Ash tree is threatened by the Emerald Ash Borer and will eventually die if no action is taken.  This page is meant to help you understand what is happening and what your options are.  


Decay of Ash trees is already evident throughout Lake Saint Louis and will continue to worsen.  With approximately 1,500 trees just along City streets, our goal is to create awareness and provide education in proactively managing the safety of our roads. 

This all starts with YOU!  Please identify all trees on your property and know your options and expectations if one of them is an Ash tree.  BE AWARE- Residents and businesses are responsible for tree removal on their property including trees along the road, or between the sidewalk and the street, Section 245.070.  The City is only responsible for trees located on City owned property, such as parks.

Help spread the word to your family, friends and neighbors. 

What is EAB?

General EAB Information

Missouri EAB Information         

Spread of EAB

The presence of the Emerald Ash Borer in Lake Saint Louis was confirmed in 2012.  Since then, the infestation has continued to spread.  


How do I identify an ash tree?


Who is responsible?

Residents and business owners are responsible for ash trees on their property.  This includes trees growing between the sidewalk and the street. The City of Lake Saint Louis recommends that property owners take this into account when assessing the upcoming EAB problem and make plans accordingly.  This situation also lends itself as a topic of discussion for Home Owners Associations in which subdivision trustees may begin budgeting the removal of the ash trees and replacing the ash with another species, perhaps, drafting and funding a five year plan for the subdivision.

Ash trees on municipal properties are the City of Lake Saint Louis' responsibility. 

I think I have an Ash Tree, now what?

The City of Lake Saint Louis cannot dispatch staff to diagnose EAB activity. What you should do is contact an ISA Certified Arborist.

Click Here for a current list of businesses licensed to work in the City.

Click Here to view local ISA Certified Arborists.  Anyone on this list may be hired, but, their business must obtain a City permit first.

Management Guide and Options:


What has the City done?

The City of Lake Saint Louis has already begun the removal and treatment options for ash trees in City parks. In addition to following removal and treatment guides, the City has already started replacing  trees that were impacted.