What happens when a tree is infested with emerald ash borer (EAB) , or diseased with oak wilt and/or Dutch elm disease and is marked for removal?

Public property: City Forestry staff monitor and survey the entire City for infested ash, oak and elm trees on public and private property throughout the year. We also take inspection requests from residents who notice a dying tree. Infested ash trees on City property are marked and issued to one of several work crews or a contractor, who must follow the same removal guidelines and timelines as private property owners. Sites are rechecked for compliance after the removal is complete. 

Private property: City Forestry staff will contact the property owner by mail or front door hanger to request access to the yard via a right of entry form in order to inspect and confirm the trees are infested/diseased. 

  • Once infested, an ash tree showing signs of EAB such as larval galleries and/or significant woodpecker activity will be marked with an orange painted ring on the diameter of the infested tree.
  • A door hanger will be left onsite and an official letter with supplemental resources will be mailed to the property owner. 
  • The property owner will be required to remove the tree according to the City’s removal requirements, usually within 30 days of receiving the official notification letter. Forestry staff recheck infested trees for proper removal 30 days after the official letter was sent. 


Show All Answers

1. What is a certified arborist?
2. What should I ask for when I am hiring an arborist or tree company?
3. What is a Minnesota Certified Tree Inspector?
4. What happens when a tree is infested with emerald ash borer (EAB) , or diseased with oak wilt and/or Dutch elm disease and is marked for removal?
5. Where is EAB in Lakeville?
6. How can I tell if my tree has EAB?
7. What are the removal requirements for an infested ash tree?
8. What If I don’t think I can remove my infested/diseased tree or properly dispose of the wood within the required timeline?
9. How do I dispose of the wood?
10. Does the stump have to be ground out and removed?
11. Should I notify the City when we finish control treatments and tree removal?
12. Does the City of Lakeville offer replacement trees for removed ash trees?
13. What can I do to save my other ash trees?
14. How do I know if my property has been re-inspected and meets the insect/disease control guidelines?
15. What constitutes a tree diseased with oak wilt or Dutch elm disease?
16. Are there things I can do to protect my elms from Dutch elm disease?
17. What can I do to protect my oaks from oak wilt?
18. What does DBH mean? What factors influence how much a tree will cost to remove?
19. How did the tree inspector determine property lines, and what if I don’t think the tree is on my property?
20. What if there are power lines over my tree?
21. Does the City mark infested and diseased trees on its own property?