About EAB

Infested Trees

EAB has been present in Roseville since March of 2013. The EAB Infestation Zone now encompasses the entire city. Every ash tree in Roseville is within one mile of an infested ash tree. It is time to monitor your tree and develop an action plan.

EAB Larvae

EAB larvae are worm-like grubs that kill ash trees by tunneling under the tree's bark. It can take up to four years after the EAB larva infests a tree before symptoms appear. By then it is too late to save the tree.
EAB pupa found in a tree

Stopping the Spread of the EAB

Roseville will continue to work with MDA to monitor the spread of this destructive insect. Both city staff and MDA staff will be on the lookout for ash trees that may be infested. We encourage property owners to look at their ash trees for signs of infestation. Property owners are responsible to remove any tree that is infested. Unfortunately, because of the EAB’s lifecycle, a tree that is infested cannot be removed between June 1 and September 1. Doing so could hasten the spread of EAB.


Tree removal contractors must be licensed by the City of Roseville and listed on the Tree Care Registry. Before you hire a tree removal service, call 651-792-7080 to make sure the tree service has the appropriate license.

We encourage property owners to talk with an arborist to identify whether their tree is infested, and what could be done to prevent an infestation. Some preventive insecticides are available, but there is no guarantee that they will save the tree. If a tree is infested with EAB, insecticides will not save it and it will have to be removed.

Roseville residents may contact Forestry Coordinator Anita Twaroski at 651-792-7142 or anita.twaroski@cityofroseville.com. She will discuss option with property owners and help find resources to address EAB.

Treating Boulevard Trees

Treatments on city trees must be trunk-injections.  The trees can be treated while the leaves are on the trees, up to when the leaves change color in the fall.