The mission of the Bowling Green Arborist is to provide a high quality urban forestry program to the community, in conjunction with expert advice on private tree care. The Arborist cares for the City trees within the road right-of-way, as well as regular line clearance tree trimming program for safe and reliable electricity.

The City of Bowling Green urban forest includes more than 9,300 trees in the public right-of-way, public parks, and green spaces. A healthy and safe urban forest includes: wildlife diversity, higher property values, air and water quality, storm water management, energy savings from summer and winter extremes, and quality of human health.

What’s New in the Urban & Community Forestry Program: November 2015

BG Tree Commission Educational Seminar:
When: Saturday, November 7, 2015 from 9-11 am
Where: Simpson Garden Park
Topic: Tree Biology & Pruning Trees in the Field
Speakers: Scott Kirby Davey Tree Expert Company and David S. Bienemann, City Arborist
Cost: Free to the Public and Free Refreshments.


How to Attract Birds to Your Backyard

YouTube on Trees, Pests & People:

Thousand Cankers Disease of Walnuts

Thousand Cankers Disease (TCD) of walnut has been confirmed in Butler County, Ohio.  The disease is caused by a fungus (Geosmithia sp.) that is carried from tree to tree by the Walnut Twig Beetle (Pityophthorus juglandis); a type of bark beetle.  Here is a quote from the news release from the Ohio Department of Agriculture (ODA):

“Walnut Twig Beetle was first confirmed in Ohio in late 2012 in traps set by Ohio Department of Natural Resources Division of Forestry officials in Butler County.  Additionally, scientists from the Ohio Plant Diagnostic Network, a cooperative partnership between ODA and The Ohio State University, recently isolated the TCD fungus from walnut branch samples from the Butler County area, marking the first time TCD has been confirmed in Ohio.”

Keep a sharp eye out for the signs and symptoms of TCD on walnut:  chlorotic and wilted leaves, twig and branch dieback, thinning canopy, and epicormic growth.  Unfortunately, the current leaf chlorosis and leaf drop from walnut anthracnose may confuse the issue.  We will have a report on TCD in this week’s Buckeye Yard and Garden Line (BYGL); the online version ( ) will include images.

Please report suspicious walnut trees to the ODA at 855‐252‐6450 or by email at

Bowling Green, Ohio, Municipal Utilities is the first utility in three years to achieve APPA’s Golden Tree Award.

With approximately 14,653 customers, the utility has planted and/or donated more than 17,300 trees since 1992.  The award, established  in 1991, recognizes member utilities participating in APPA’s Tree Power program that have planted one tree per customer. Any APPA member utility that is an active Tree Power participant is eligible. Replacement trees and trees planted by the utility  before Tree Power participation count toward this goal. There is no deadline for this award. Apply by emailing

“We are a relatively small urban forestry program, but we have proved you can do a lot with drive, passion and the support of your community,” said David Bienemann, the first municipal arborist for the city of Bowling Green, Ohio.

Spruce Trees Impacted by Environmental, Insects, and Diseases:

Spruce trees do not like to be planted wet, clay soils.  The spruce trees become stressed and start to decline.  Then insect pests are attracted to the stressed tree.  The insect pest brings in the disease such as cytospora canker or phomopsis canker.

Tree City USA Awards Ceremony, Toledo, Ohio on April 29, 2015

JoAnne Searle, Tree Commission Member accepting the 35th Tree City USA Award from Tyler Stevenson, Urban Forestry Coordinator, ODNR Division of Forestry,
Jo Anne Searle, Tree Commission Member accepting the 35th Tree City USA Award from Tyler Stevenson, State Urban Forestry Coordinator, ODNR Division of Forestry
Mayor Richard Edwards and Joanne with the 35th Tree City USA Award and 21st Growth Award for Bowling Green
Mayor Richard Edwards and Jo Anne Searle with the 35th Tree City USA Award and 21st Growth Award for Bowling Green

Arbor Day Celebration with St. Aloysius Catholic School on April 24, 2014.


Honorable State Senator, Randy Gardener attended the 2015 Arbor Day Program!
Honorable State Senator, Randy Gardner attended the 2015 Arbor Day Program!


Honorable State Senator, Randy Gardener presenting a proclamation from the Ohio Senate to Mayor Richard Edwards, City Arobirst David S. Bienemann, Tree Commission members, Kent Reichert and Dr. George Clemans.
Honorable State Senator, Randy Gardner presenting a proclamation from the Ohio Senate to Mayor Richard Edwards, City Arobirst David S. Bienemann, Tree Commission members, Kent Reichert and Dr. George Clemans.

Arbor Day Program 4-24-15 025

A total of 125 students at St. Aloysius Catholic School participated with the Arbor Day Celebration sponsored by the Bowling Green Tree Commission.  A poster contest was held with the third grade, fourth grade, fifth grade and sixth grade classes.  Each student participating in the poster contest received a certificate of participation.  A certificate was given to first, second and third place winners of each fifth grade class.  Each fifth grade student were handed an Arbor Day bag filled pencils, rulers, stickers, magnets, buttons and information on how trees are important for the environment.  The City of Bowling Green donated 200 tree seedlings to St. Aloysius Catholic School.

Buckeye Yard and Garden on Line: Click here for more information plant diseases and insect pests by OSU Extension experts across Ohio.

Asian Longhorned Beetle Found in Ohio; OSU Extension Offers Information Hotline

COLUMBUS, Ohio — The Ohio Department of Agriculture today (6/17) announced the first discovery of Asian longhorned beetle (ALB) in Ohio. An exotic, invasive insect that kills maples and other trees, ALB was found in Bethel, Clermont County, in southwest Ohio.

COLUMBUS, Ohio — The Ohio Department of Agriculture today (6/17) announced the first discovery of Asian longhorned beetle (ALB) in Ohio. An exotic, invasive insect that kills maples and other trees, ALB was found in Bethel, Clermont County, in southwest Ohio.

For the full story and additional resources, go to:

Questions? Call OSU Extension’s ALB Southwest Ohio Information Line: 513-946-8980.

USDA APHIS have identified the Asian Longhorn Beetle in Clermont County Ohio.  Click here for more information.

Template for Assessing Climate Change Impacts and Management Options (TACCIMO)

The Template for Assessing Climate Change Impacts and Management Options (TACCIMO) is a Web-based tool that provides land owners, managers, and planners with the most current climate change science available. Developed by EFETAC researchers in partnership with USDA Forest Service Southern Regional Planning, Land and Resource Management, and Cooperative Forestry, the TACCIMO tool:

  • compiles climate change projections, literature-based impacts and management options, and Forest Service land and resource management plans in an online database;
  • synthesizes these inputs based on user-defined criteria; and
  • creates an optional customized report to aid forest planning and management.

Information generated by TACCIMO can satisfy a range of needs for a variety of users including federal planners and managers as well as state, private, and cooperative forestry stakeholders.

Click here for more information on using TACCIMO.

Landscaping Options for Underground Electric Transformers:

The City of Bowling Green Electric Division requires 3 feet of space on the sides and the rear of the padmount transformer and a minimum of 8 feet in front of the transformer for safe operations of service.  Planting landscape material, rocks, retaining walls or putting in fences to hide the “green box” is a safety issue for both City Electric crews and the land owner.  Please click here to see a guide for landscaping in the vicinity of a padmount transformer.

EAB Information:


Following recent confirmations of emerald ash borer (EAB) in the Wayne National Forest, and taking into account the infestations in surrounding states, the Ohio Department of Agriculture (ODA) expanded the state’s EAB quarantine to include all Ohio’s 88 counties on Thursday, September 8, 2010.

Despite the fact that quarantining the whole state will allow for ease of movement of ash materials and hardwood firewood, it is recommended that Ohioans continue to exercise caution when moving these materials.

“Limiting firewood movement helps the state protect against the artificial spread of many pests in addition to emerald ash borer, including gypsy moth and Asian longhorned beetle. The department strongly urges Ohioans to continue buying firewood locally.”

-Ohio Agriculture Director Robert Boggs.

The federal quarantine, enforced by the US Department of Agriculture, remains in effect. This quarantine makes it illegal to transport ash trees, parts of ash trees and all hardwood firewood out of the state of Ohio.  There is still interest, and potentially more so with the expanded quarantine, to continue to monitor and track this insect pest. To accomplish this, ODA will continue to accept specimens for confirmation. As specimens are confirmed as EAB, maps will be updated. All samples must be accompanied with a Specimen of Determination form that can be found on the ODA website, or by calling 888-OHIO-EAB.  For information on the EAB, check out OSU’s EAB website at . Additional information on the expanded quarantine or regulations can be found at .

For more information, see:

The Ohio State University & City of Bowling Green EAB Research Project:

Click here for a Youtube by Dr. Dan Herms, OSU Professor of Entomology

Frequently Asked Questions:  Click here for more information.

New Photos in the Photo Gallery

Landscape Guide for Developers, Businesses and Home Owners is now available to the public.   Click here for PDF copy.

Tree Service Request Click here.


image3butterflyCity of Bowling Green Rain Garden Initiative:

The rain gardens will be planted with native plants to Northwest Ohio.  The rain gardens will be for public education and function to reduce the amount of stormwater runoff into the combined sewer-storm water system.   Click here to see the pictures of the new rain garden construction.

American Rivers with information on Rain Gardens on Youtube

Buckeye Yard and Garden Online:
  Buckeye Yard and Garden online provides timely information about Ohio growing conditions, pest, disease, and cultural problems. Updated weekly between April and October, this information is useful for those who are managing a commercial nursery, garden center, or landscape business or someone who just wants to keep their yard looking good all summer.

Growing Degree Days and Phenology for Ohio: Provides estimated dates of when plants bloom and insect pests hatch throughout the growing season.

AMERICAN NURSERY & LANDSCAPE ASSOCIATION – American Standard for Nursery Stock.   Click here for more information.


emerald-ash-borerNEW – EMERALD ASH BORER (EAB) UNIVERSITY – FREE WEB-BASED TRAINING PROGRAM ON EMERALD ASH BORER.  Click here for to register for new classes or view archived webinars.


Emerald Ash Borer (EAB) has reached epidemic populations levels in the City of Bowling Green.  Businesses and Home Owners should to have their private ash trees inspected by the Municipal Arborist or a Professional Tree Service to determine the options available for managing EAB.  Click here for latest research on EAB insecticide treatments.   Click here to determine the percentage of canopy thinning on ash trees.


Pictures above from Country Club Drive after routine maintenance pruning.


Routine Maintenance Pruning

Routine Maintenance trees are defined as trees recommended for horticultural pruning to correct structural problems or growth patterns which could eventually obstruct traffic, pedestrians walking on sidewalks, interfere with utility lines, or buildings.  Trees in this category are large enough to require bucket truck access or manual climbing.  Our crews prune a maximum of  25% of the canopy from the trees.  We will move into Ward 4 (North of W. Wooster and West of N. Main) in 2014.


Picture shows the S-shaped galleries left by the Emerald Ash Borer larvae.
Picture shows the S-shaped galleries left by the Emerald Ash Borer larvae.

Emerald Ash Borer (EAB) spreads throughout the City Of Bowling Green.

The numbers of trees identified as infested with Emerald Ash Borer has increased significantly throughout Bowling Green.  The City is taking pro-active measures to deal with EAB and now is encouraging citizens with ash trees to consider future actions for their trees.  Bowling Green residents and businesses are encouraged to consider options for managing ash trees.  Two primary options available: removal/replacement or insecticide treatment.  Removal and replacement prior to infestation is the most cost effective option.  Dead and dying frequently cost 2-3 times more to remove than live trees due to unpredictable nature of dead wood.  The risks to surrounding structures and to the lives of qualified arborists who remove these hazardous trees is a major factor in the cost.  For tips on hiring an arborist, visit for a consumer guide How to Hire and Arborist. 

Systemic insecticides may be an option to prolong the life of highly valued ash trees prior to infestation.  The Ohio State University Extension Office has developed specific recommendations on insecticides.  Click here for more information.  While insecticide products are not 100% effective and are preventative measures, it is an EAB management option.

ODOT Certified Training

The Public Works Division staff, Electric Division staff, and Parks & Recreation Department staff attended safety training in aerial bucket truck operations, chainsaw operations, and chipper operations.  Our goal is to provide the best service to the residents of Bowling Green and our urban forest.

City Tree Planting in Green Spaces:

Our Tree City USA Program has planted over 3425 trees from May 2004 through May 2015.  The goal is to plant the “Right Tree in the Right Place” by selecting trees that fit the planting site based on soil type, drainage, infrastructure (power lines, gas lines, water & sewer lines), visibility triangle and long-term capital improvement projects.  The City Arborist coordinates with multiple City Departments to include the preservation of trees or tree replacement programs to maintain the canopy effect.  All new subdivisions and new business plans are now reviewed by the City Arborist to offer recommendations on future tree plantings and landscape design plans.

Priority Pruning of Large Trees 2015:

Our internal City tree crews will be working on pruning large trees primarily on the west side of the City of Bowling Green in Ward 4, City Park, and the Bowling Green Country Club.  The crews will be pruning out dead and diseased branches, broken/crossing branches or branches that extend over the street or sidewalks.

Priority Removal Trees 2015:

Our internal City tree crews will coordinate on removing priority trees on the west side of the City of Bowling Green in Ward 3 & Ward 4, City Park, and Bowling Green Country Club.  Priority trees are defined as trees that are dead or have one or more defects that cannot be maintained by pruning.  The majority of trees in this category have a large of percentage of dead crown and potential safety hazards.  Large dead and dying/diseased tree are high liability risk are included in this category.

Train Pruning of Small Trees 2015:

The Urban and Community Forestry staff will be working in the new Subdivisions from May 2015 to August 2015.  The crews are pruning smaller trees to remove dead branches, crossing branches, and branches that extend over the street or sidewalk areas.  The objective is to train the tree to provide safe clearance for motor vehicles, signs and pedestrians.  The pruning corrects the structure and form of the young trees to help grow healthy and strong as they mature.