We will continue treating and removing select ash trees along streets this year in response to the presence of emerald ash borers in the City.
The Emerald Ash Borer is a non-native insect that burrows into ash trees, eventually killing them. The insect is spreading throughout Ohio and is killing millions of ash trees in the Midwest.
We have been treating select ash trees and planning other efforts to try to curtail the insect’s progress into the Dublin area since 2008.
In the spring of 2011, during full leaf expansion to the end of June, we treated street trees with a chemical injected in the tree trunk. Areas that received this treatment include Alan Moss Court, Adventure Drive, Blunden Road, Bridge Street, Chapel Way Court, Dublinshire Drive, Earlington Parkway, Frantz Road, Hard Road, Heatherwood Lane, McNeven Court, Millhouse Lane, Olivia Court, Pharoah Drive, Sweeney Court and Tuttle Road.
Additionally, in the fall of 2011, the we treated the following areas: Amberleigh Way, Ballantrae Place, Ballybridge Lane, Barronsmore Way, Brand Road, Bristol Drive, Gillingham Drive, Golden Place, Inistork Court and Drive, Kendal Ridge Boulevard, Kilbrittan Lane, Parker Hill Lane, and Wendy Trail Lane.
We can take steps to treat some trees, but the sheer number of ash trees in Dublin mean some will die because of the insects. There are thousands of ash trees in town, including approximately 2550 street trees along roadways and 1,500 in City parks.
Ash Trees on Commercial Properties
Because of their tolerance of urban conditions, ash trees were planted on commercial properties to satisfy specific code requirements. Existing ash trees were also preserved in many areas around the development of commercial properties.
Many Ash trees have now become infested with Emerald Ash Borer. This pest continues to damage thousands of healthy ash trees in our community and millions of trees across Ohio. Emerald Ash Borers can kill a healthy ash tree within a couple of years. Early detection is difficult but can help reduce the spread of the pest.
Dead and dying trees pose a threat to patrons and property and should be removed as soon as possible. Dublin City Code requires the replacement of dead and dying trees on commercial properties. However, trees do not need to be replaced until the next growing season regardless of when the tree is removed. Arrangements can be made to spread out replacements over several planting seasons if necessary. Some trees may not need to be replaced depending on its location on the property.
If you have ash trees on your property or if you have any questions about other trees on your property, contact Brian Martin, Zoning Inspector, at 614.410.4660 or email@example.com. For more information, visit www.emeraldashborer.info.
What can residents do?
There are many arborist companies and some landscape companies that can perform trunk injection and soil treatment. Homeowners can purchase soil treatment chemicals at home improvement stores, but tree injections must be done by professionals. The City recommends that arborists be ISA Certified.
Residents also should not transport ash wood from their property. For more information, go to: ohiodnr.com/tabid/5066/Default.aspx
The decision to treat, remove or retain ash trees on private property belongs to the property owner. When evaluating replacement options, remember to consider the appropriateness of specific species in terms of size, location, access to utilities, and other factors.
Contact the City of Dublin Forestry team in the Division of Parks and Open Space at 614-410-4701.
What does an Ash Tree look like?
Follow the Ash Tree Identification Guide: http://www.anr.msu.edu/robertsd/ash/ashtree_id.html
Emerald Ash Borer Management Plan
The Emerald Ash Borer (EAB) is an introduced pest that is killing ash trees in Michigan, Indiana, Illinois, Ohio, Delaware and Ontario. Since its discovery in Detroit, Michigan in 2002, the borer has spread, killing virtually all ash trees in its path.
As of 2011, Dublin inventories show approximately 2,397 (9.5%) of the City’s 22,800 street trees are ash trees. 1,500 ash trees are planted in parks. Thousands more ash trees are growing on other city property in wooded lots and stream beds as well as private property. The City of Dublin must prepare and manage for the arrival of this pest on three fronts – street trees, park/public trees, and trees on private property.
During the spring of 2007 ash trees were removed from major arterial roads such as Emerald Parkway, Rings Road and Woerner Temple Road. Since then systematic ash removal has been suspended. If there is a problem with an ash and it is not deemed a good candidate for treatment then the tree will be removed. Ash trees will be evaluated on their health, vitality, and location.
A soil injection program was started in the spring of 2008 in the Wedgewood Hills subdivision where ninety one ash were treated. Additional treatments will continue during the following spring months when the insect is most vulnerable to insecticides.
Contact the City Forester at 614-410-4701 should a resident like to provide pesticide treatments to the street tree (s) adjacent to their property. This will be done at the residents’ discretion and expense. Treated trees will be removed by the City if treatments fail and EAB infests the tree.
There are many specimen ash trees in City parks, as well as thousands of ash in wooded park areas. In the spring of 2008, 100 specimen ash within numerous parks were treated. These trees will be monitored as others in the parks. Ash trees in a wooded park will be left alone. These trees will die once infested by the EAB. They will be left in the woods to decompose unless they represent a hazard to public safety to park users, in which case they will be felled and left.
Parks and Open Space staff will not dispose of any wood outside the quarantine area except at approved sites.
As budget permits, all removed ash trees will be replaced with non-host specific species that will enhance the planting site, are appropriate for the planting site, and add diversity. Trees will be planted in accordance with the Ohio Nursery and Landscape Association/Ohio Division of Forestry Planting Specifications and be in the 2” to 2.5” caliper. All new plantings will conform to the “10-20-30” tree Species diversity rule – no more than 10% or any species of tree, 20% of any genera of tree, or 30% of any one family of tree.
Trees on Private Property
There are many thousands of ash trees on private property in Dublin. No inventory exists and ash density varies by neighborhood.
Property owners are urged to monitor the EAB’s movements. The decision to treat, remove, or retain private tree rests with the property owner. Residents should consider many variables when evaluating options, including tree size, location, and condition; access to the tree; potential targets should the tree fall; property value; shade, heating and cooling values; treatment techniques, efficacy, and costs’ proximity of EAB infestation; and intangible costs.
The City will enforce the relevant section of the Ordinance 153.134, Section K, through its Code Compliance program should it receive complaints about hazardous private trees. Private trees that are a threat to private property will be inspected only as complaints are received.
When hiring for insecticide control or tree removal it is encouraged to contact a qualified ISA Certified Arborist. Contractors should be able to provide proof of liability insurance and worker’s compensation coverage. The City also encourages residents to replace trees lost with species appropriate for the site, or to plant new trees in advance of EAB infestation and ash removal.